What's going on the with me?

I had my period from 9/2-9/7, It said I was supposed to ovulate starting the 11th. Husband and I had sex that very same day (9/11) I normally spot a little after sex or it makes my period come faster than normal anyways this time it did not but the spotting (only when wiped) did continue for 2 days, on the 18th everything was good the spotting had stopped for a few days. I had been feeling off at this point for a couple of days, uinating frequently, real thirsty, backache, nausea when I eat, feels like a full stomach and want to throw up but didn't.. Anyway, on the 18th for a little over an hour around 7pm I needed to go to the bathroom, it seemed like I was getting another period in the same month because I bled and 2 clots fell out.. I took a trip to the bathroom in that hour like 3 times, then the final trip there was nothing like it never happened. (Weird) so the next morning (yesterday) everything was fine. No blood at all, just the usual symptoms I've been feeling for days, everything was cool, this morning I had to use the bathroom, and there it was again.. I wiped and blood (bright red) not a lot but there's definitely blood. It already feels like its not going to last like the last one because its already becoming light. But what gives.. What's going on.. I have never experienced this. A little about why I am asking here and not going to a doctor is because approximately 2 in a half months ago I went in for some chest pain and the trip wasn't cheap and I don't have insurance. All kinds of tests were ran, everything came back negative, I am not diabetic just scheduled me for a stress test and a low salt and cholesterol diet which I have been on to the T, in the last few months since, I went from 280 to 266. I know I'm still heavy but everything is possible I had a friend who could never get pregnant once she started losing weight she got pregnant plus there's heavier woman than me that I know and they have gotten pregnant.. So with that out the way, what's up with me.. I have been married for a yr but have been with my hubbs for 12, and we are finally ready for a baby. Never been on birth control or anything like that we just always been careful. Help please and sorry it's so long and tmi. Thanks for listening.

One more thing, I am supposed to get my period on the 29th of September, I have a 27 day cycle and my period is normally on for 5 days. If this stuff helps.