Help! I have pcos and I’m not sure if I’m pregnant

I have pcos. And since my youngest was born I’ve had the most “regular” cycle I’ve ever had since getting off bc 5yrs ago. None the less my partner and I have been very if it happens it happens. It took me almost two years to get pregnant with my youngest. We’ve only been ttc for 4 months. Because no period app helps track pcos mensural cycle, so the way I know my period is coming this app says I’m 8-9 days late. And usually bam I get my period then and there. Recently about a week ago we had sex and I bled. Previously I was experiencing cramps, tender boobs, the works, so I was like ok cool came a tiny bit earlier but I’m ok with getting my period, I put a tampon in for the night and think nothing of it, the next morning when I wake the tampon only had bright red blood at the tip and that’s it. I used another tampon and went to work, went to use the bathroom and tampon had NOTHING. To play chance I didn’t use another one, I had small spotting that nothing ever since. Just three days ago we had some serious rough sex and bam bled again. I’m like ok this time it’s it! “Had been feeling bloated” so I’m like finally the evil af came. Next day and next and today NOTHING! I’m technically 5-6 days late from my usual cycle. But there’s been times where I went one to two months with no period. I don’t want to get my hopes up and I don’t want to waste money on a test! Idk what to do. When to test. Nothing. This is what sucks about pcos! I was going to wait til I was two weeks late. What do ya’ll think?