wacky period. need advice

Layli • I am 21, my SO is a wildland firefighter, we are pregnant with baby #1 and I have 2 gorgeous step kids. I have stage 4 endometriosis and PCOS.
I have stage 3 endometriosis and this is our 4th month trying. I got a positive opk on cycle day 9. Anyone else had a weird cycle like this?