What Are The Symptoms Of Hormonal Imbalance ?
Your question is a very good one and I will try to provide you with some information and recommendations regarding what is going on.
From the symptoms you have reported as well as the time course of your periods I am not concerned that you're pregnant at this time. What I think most likely happened is that you had a bit of a fluctuation of the hormones in your body including estrogen and progesterone. This led to some of the symptoms of breast swelling as well as a little bit of uterine bleeding.
I would recommend that you continue your current birth control pack as prescribed. I do not see any indication to visit with your doctor right now. The fact that your pregnancy tests have all been negative is also very reassuring. These tests are more and more reliable these days so I trust the results which you have reported.
I recommend for now that you refrain from sexual activity for the next three or four days about your body gains back its equilibrium. I would then repeat a pregnancy tests in 72 hours to confirm the fact that it is negative. As I mentioned earlier I would continue your birth control as you normally take them.
Thank you again for submitting your question. I hope you found my response to be helpful informative and reassuring. If you have any additional questions I would be happy to address them.
Sincerely,
Dr. Robert.