Not ovulating/ovulating late

Boymama • Just had our third and last baby! #boymomforlife 💙💙💙
I'm getting so frustrated, month after month I am ovulating late then AF comes early! Last month I got a positive OPK but my temps didn't show ovulation. I'm TTC #3. #1 and #2 took a long time to conceive too so I should have expected it but damn this is frustrating!!!!
I was on clomid while TTC #2 and had a MC. Not sure if they were linked but in my mind they are, although clomid got me pregnant in 2 cycles 😢😭
I know I shouldn't stress but that's something that's out of my control at times.....
Any advice? (I'm currently trying to lose weight, hoping that will help. But I'm struggling wrapping my mind around losing weight just to gain it all back when I get my BFP
TUA