pregnancy after miscarriage birth

I recently had to give birth to my baby girl at 5 months on April 12th. She didn't make it. Im better now but I haven't gotten my period since April 12. On June 12th I'll make 2 months w/  no period. Has any other had a situation like this? It was my first pregnancy. I don't know how long it last to get your period after the birth one.