Cramping after af?

Jessica • We are working on number two. My son will b three in june and im ready for another addition. Super excited to b part of this group.
Soo AF came late, suspose to b April 28 but came may 3. Very light day one, heavy day 2, brown kinda light day 3. Irregular AF so not sure of ovulation or anything jus been kinda guessing. Anyway yest and today I've had AF like cramping for a few hrs then it goes and away. Anyone experience this?