Side Effects of First-Time Birth Control Pill Use

Concerns about side effects from the initial use of Yaz?

Hello Doctor, I started my menstrual period on October 4th and began taking Yaz that same day for dual contraception.
This is my first time using oral contraceptives, and I have concerns regarding the contraindicated groups mentioned in the package insert.
Currently, I am in my second week of taking the medication, and around 8:00 PM, I experience sudden and severe numbness in my right calf.
Could this be a side effect related to thrombosis? I do not have a family history of cardiovascular diseases, but my blood pressure tends to be quite low (around 85/55).
The weather is starting to get cooler, and during winter, I often experience poor circulation (cold hands and feet).
Therefore, I am unsure if this is a side effect of the contraceptive or related to my own condition, especially since I am a student and tend to sit for long periods.
I notice that moving around alleviates the numbness.
Additionally, it has been over a week since the first day of my period, but I do not feel like my menstrual cycle is coming to an end, and it does not seem like spotting, as the flow is still sufficient to require sanitary pads.
Could this be due to taking the contraceptive? Thank you.

Qing, 20~29 year old female. Ask Date: 2018/10/12

Dr. Huang Jianzhong reply Obstetrics and Gynecology

On October 4th, my menstrual period started, and I began taking the contraceptive pill (Yaz) that day for dual contraception.
This is my first time taking an oral contraceptive, and I have concerns regarding the contraindicated populations mentioned in the package insert.
Now, two weeks in, I experience sudden severe numbness in my right calf around 8:00 PM.
Could this be a side effect of a blood clot? I do not have a family history of cardiovascular diseases, but my blood pressure tends to be low (around 85/55).
The weather is starting to cool down, and during winter, I often have poor blood circulation (cold hands and feet).
I'm unsure if this is a side effect of the contraceptive pill or a personal issue, especially since I am a student and need to sit for long periods.
I find that moving around alleviates the numbness.
Additionally, it has been over a week since the first day of my period, but I do not feel like it is coming to an end.
It does not seem like spotting, as the flow is still enough to require sanitary pads.
Could this be due to taking the contraceptive pill? Answer: This is related to taking the contraceptive pill; dual contraception is unnecessary.

Reply Date: 2018/10/12

More Info

When starting a new birth control pill, such as the one you mentioned (Yasmin), it is common to experience a range of side effects, especially during the first few weeks of use. The symptoms you are describing, particularly the sudden numbness or tingling in your right calf, can be concerning, especially since you are aware of the potential risk of blood clots associated with hormonal contraceptives.

Hormonal birth control pills can increase the risk of venous thromboembolism (VTE), which includes deep vein thrombosis (DVT) and pulmonary embolism (PE). This risk is generally higher in women who have certain risk factors, such as a personal or family history of blood clots, obesity, smoking, or prolonged immobility. While you mentioned that you do not have a family history of cardiovascular disease and that your blood pressure is low, it is still important to monitor any unusual symptoms closely.

The numbness in your leg could be related to several factors. If you have been sitting for extended periods, especially in a position that may compress blood vessels or nerves, this could lead to temporary numbness or tingling. However, if this sensation persists or is accompanied by swelling, redness, or pain in the leg, it is crucial to seek medical attention promptly, as these could be signs of a more serious condition like a blood clot.

Regarding your menstrual cycle, it is not uncommon for birth control pills to cause changes in bleeding patterns. Some women may experience irregular bleeding or spotting, especially during the first few months of taking the pill. This can manifest as prolonged bleeding, lighter or heavier periods, or even missed periods. The fact that you are still experiencing a menstrual flow that requires the use of sanitary products suggests that your body is adjusting to the hormonal changes induced by the pill.
If you are concerned about the prolonged bleeding or any other side effects, it is advisable to consult with your healthcare provider. They can evaluate your symptoms in the context of your overall health and determine whether any adjustments to your birth control method are necessary.
In summary, while some side effects are common when starting a new birth control pill, it is essential to remain vigilant about any unusual symptoms, particularly those that could indicate a serious condition like a blood clot. Regular follow-ups with your healthcare provider can help ensure that you are using the most appropriate contraceptive method for your health needs and lifestyle. Always feel empowered to discuss any concerns you have with your doctor, as they can provide personalized advice and reassurance.

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