Breastfeeding and no periods?

Rose
Okay, so after i had my daughter (in november) i had 2 periods. i haven't had one since january. i do breastfeed and also give formula, but i def breastfeed more then i give her bottle. i heard this is normal, but it feels weird lol. when will i get a period?( not that i miss it 🤣)  has anyone else had this happen?