CD42😭😭😭

I used to be regular. But after my third that all changed. I started my periods at 6 m pp(due to nursing, ik normal) but with my other two they were alot older and i went regular right away. Now i have cycles anywhere from 30-49 days (only 1 was 30 days) idk what to do! This is not normal for me. Im in so much pain between periods. I contantly feel like im gunna start my period and all bfns! Makes ttc real hard. My first two were unplanned, my second two pregnancies, a miscarriage and my rainbow were both planned an dtook 1 cycle to concieve.