I had a miscarriage when will I get my period?!

I'm 23, I just experienced my first pregnancy which was sadly short lived. I lost my baby early May. I know it's only June but I haven't got a period yet and I'm kind of nervous because I've always heard u r more fertile after your first pregnancy. The doctors couldn't tell exactly when I had lost the baby & had just been holding it n my stomach and me and my boyfriend had stopped taking precaution because we thought I was already pregnant, U can't get pregnant twice at once, but it has been 5weeks since the end of my miscarriage & no signs of a period. I read 2dif things one said after 4weeks it should come back normal & the other said 5-7weeks. I just want an opinion from someone who may know personally.. Thanks