Am I Pregnant? Symptoms and Testing Accuracy - Obstetrics and Gynecology

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Based on the information you've provided, it seems that you are experiencing some confusion regarding your menstrual cycle, potential pregnancy, and the symptoms you are experiencing. Let's break down your situation and address your concerns.

First, it's important to note that the timing of your menstrual cycle is typically around 30 to 33 days, and you mentioned that your last period started on December 17. Given that you had sexual intercourse on December 28 and January 6, the timing of these events in relation to your ovulation cycle is crucial. Ovulation typically occurs about 14 days before your next expected period, which would place it around January 1 to January 3 for a cycle starting on December 17. If you had unprotected intercourse during your fertile window, there could be a possibility of pregnancy.

However, you also mentioned that you used condoms during intercourse, which significantly reduces the risk of pregnancy when used correctly. The fact that you checked for pregnancy on January 12 and again on January 18, both yielding negative results, further suggests that pregnancy is unlikely. Home pregnancy tests are generally quite accurate when used correctly and at the right time, typically after a missed period.

Regarding the symptoms you are experiencing, such as breast tenderness and nausea, these can be attributed to several factors, including hormonal fluctuations, stress, and changes in your routine. It is not uncommon for women to experience breast tenderness or other premenstrual symptoms that can vary from cycle to cycle. The fact that your breast tenderness is occurring later than usual in your cycle could be related to the hormonal changes that can occur due to stress or other factors, including the administration of a hormone injection (like the one you received to induce your period).

The presence of brown discharge you noted on January 9 could also be a sign of hormonal imbalance or the onset of your period, rather than an indication of pregnancy. Brown discharge often occurs when old blood is expelled from the body, which can happen at the beginning or end of a menstrual cycle.

In summary, while it is theoretically possible to have a negative pregnancy test and still be pregnant, especially if the test is taken too early, the likelihood in your case seems low given the negative results and the use of condoms. The symptoms you are experiencing could be related to stress, hormonal changes, or the effects of the injection you received.

If your period does not arrive soon, or if you continue to experience unusual symptoms, it would be advisable to follow up with your healthcare provider. They may suggest further testing or evaluation to rule out any underlying issues. In the meantime, try to manage your stress and maintain a healthy routine, as these factors can significantly impact your menstrual cycle and overall well-being.