About 5 weeks ago I got what I had thought was my period. However only a small amount of blood came out during the first day followed by a brownish/black discharge (which had no odor) the next 3 days. Usually I have a very heavy flow of blood lasting about 5 days so this was very abnormal for me. Then about 2 weeks ago the brownish/black discharge returned but it was even more heavy and continued for about 4 days. I really do not believe this could have been my period because I always experience extremely swollen and sore breasts the week before my peroid and also a few days into it. During these 4 days I did not experience any swelling or soreness of my breasts, or cramps which I also always experience during my regular period. I still have not gotton my period and for the past week and a half I am having to urinate way more than normal, about 10 times a day but I do not experience a burning sensation when I use the bathroom. I have also been getting very nausious about once a day every day around the same time for the past week. I am sexually active with my boyfriend and regretably we do not use protection and I am not on birth control and never have been. I'm extremely afraid I could be pregnant and do not want a child at this time in my life, I am only 20 yrs old. Also, the past couple of times we've had sex and its lasted for longer than 20 min I experience swelling of my labia and the skin surrounding the labia, it is also sore. I am so confused as to what could be going on with me and am not able to see my OBGYN until 2 weeks from now. I would appreciate it so much if someone could give me some insight as to what might be going on with me. Please help. Thank you so much.