AF or pregnancy

Due to a short luteal phase, I was on progesterone suppositories from Day 16 to Day 27. My cycle is usually around 28 days depending on my ovulation day. I got a positive ovulation test on October 7th. On October 19th, I started having light pink spotting ( only when I wipe). On the 21th evening, I noticed that the blood became red, but still spotting. On the 22th I have what seems to be my periods, it was heavy, with clots and the cramps were awful. On the 23rd, the flow was still the same. On the 24th it was medium flow but since the 25th, it went back to light pink/brown spotting ( only when I wipe). Meaning I spotted for 2 days prior and only really bled for 3 days, while my usual periods last 7 days. I’ve been nauseous since yesterday and I just thrown up twice in the past hour. I’m still having period like cramps.

I’m confused.