Symptoms!?

I was diagnosed with PCOS in 2014 and I've been TTC since June 2015. I have irregular periods and had a miscarriage in December. I can't pinpoint when my fertile days are so my boyfriend and I do it about every weekend. We tried on April 2nd and then the next weekend. Last Monday I had light pink/brown discharge and it stopped that same day. Then Friday I had like cramps 5 inches right of my belly button when I would laugh or sneeze. And yesterday I had a sudden rush of nauesous and I felt like I need to sleep after a 10 hour sleep the night before. Today I have discomfort in my stomach and feel again extremely sleepy. Has anyone had this before and found out that you were pregnant?