Longer cycle days

Sc

Before I got pregnant I always had 28 day cycles and my period was always on time. I had my baby October last year and my period returned in December. My period in January came in 28 days too. I'm not breast feeding and I'm on the mini pill btw.

Since February my periods have been unpredictable, and I've gone up to 38 days without a period. This is currently cycle day 32 and no sign of a period 😭. I go crazy every month thinking I'm pregnant. Is this a thing?