Help!!!!

Okay so I've been having unprotected sex and we haven't been worried about pulling out or anything. I was 8 days late for my period and started having light pink, creamy discharge then about 12 hours later started bleeding heavier like a period. It last long enough to be a period. I've been having so many pregnancy symptoms but when I took a test (on the day bleeding started) it was negative. I've been bloated for several weeks, severe back pain, all the sudden started breaking out (I've never broke out in my life), I've been having diarrhea, and even mood swings. My body just doesn't feel normal. Could all of this be a coincidence or should I take another test soon?