Ovulating? (TMI-ish?)

Ok ladies, this might be a bit TMI, just a forewarning.

When I ovulate I've always gotten a white creamy discharge, which I know is normal. I think I got my period over a week ago (it might have been spotting) but it only lasted two days. I took a pregnancy test on Monday because I was a bit worried but it was negative. I think I may be ovulating because I have this discharge, but my uterus/lower stomach area has been feeling kind of tight since this started. I just want to know if any of you have experienced anything like that? It's not cramps, it's more of a tight, kind of stretched out feeling. I'm not sure how else to describe it. Any insight would be wonderful, thanks girls!