Literally about to give up

So my boyfriend and i are very serious and if it were up to us we'd be married right now. We have been trying and trying and TRYING to get pregnant for 3 months now. No condom. No birth control. No pull out method. Nothing. My period is always late and i always get my hopes up. It literally seems like nothing good will ever happen for us. We both have stable jobs our own transportation,we pay our own bills,so it's not like it would be a burden for us.We hope and pray for a baby and always get let down. Should i just give up?