Missed Period With Negative Pregnancy Test :s Any Advice?

[melissa]

I was taking the pill for 6yrs and stopped Feb 09, I had a normal period Mar 20-27 and never had one April. I had my period on May 14-19 and I have not had a period since. My boyfriend and I are having unprotected sex. I love water but lately I drink way way more then i normally do, I also have very bad bloating in my belly. My boobs/nipples were tender and sore a few days ago but are not anymore. I took a home pregnancy test 2 days ago and it was negative. I have searched the internet to find symptoms of pregnancy but I would like some more advice.