Feeling really ill after period?:/ (some tmi)

Ive got pcos so I dont get regular periods. I had a perid recently for about 5 days and it was a real odd period. Most of the time it was just there when I wiped vs on the pad. And it wad more of a mucus mixed with blood vs just straight blood. Spotted for 1.5 weeks till period started and period lasted 5 days then some light spotting for a couple days after. Since ive ended my period ive been super fatigued and sick to my stomach. Ive puked 1x and come close to it 3x.

I took a preg test after the first puking incident and it was neg. Any suggestions on what this could be?:( I feel like ive been sleeping my life away any chance I can get lately!