Weird symptoms

Ok so it’s a long story but I just feel like something is off. The last time I had unprotected intercourse was in August 2018. My period came the next day. The next month I had two days of extremely heavy bleeding and then 7 days of spotting. October rolled around and I had 1 day of heavy and 3 days of spotting. Same thing happened in November. This is not a normal period for me so I took a test just to be sure and it was negative. I skipped my period in December and took another test just to be sure and negative. January I had one day of medium bleeding and then 3 days of spotting once again. Now I’m four days late and wondering if I’m going to skip again but I just tested neg again. About 6ish weeks ago out of the blue my stomach started “twitching” and it hasn’t stopped. It’s off and on but thought the whole day every day and it’s a bigger twitch now than a few weeks ago. I started having dizzy spells a few days ago. Been having headaches for a couple weeks now. I’m just not sure what is going on. I don’t have a OBGYN so I’m trying to figure this out as best I can without sounding crazy to a dr. I just feel like something is off. Any ideas?