FRER really messed me up

Kim • 1 daughter on earth🎀 & 1 daughter in heaven🕊

Got a very faint line two days ago. Was sure it was going to be a positive for me. Taken 4 cheapies since and look like this. Period was due today but didn’t come

***QUESTION***

Does anyone know if your cycle regulates after your first period PP? **No breastfeeding**