is the pill affecting me?

evelyn • 19👑 college student

So I had finished my period on the 14th of July. Then on the 25th I had a lot of spotting tha continued to the next day. I did have unprotected sex on the 12th and he came inside of me. I really do not know what could be happening. I'm not sure if it makes a difference that I am on Birth Control (Pill). I am concerned as to what my body is doing... does anyone have any ideas?