hey, well i got r few issues...my bf and i love eachother alot, but i dont kno wat to do anymore

his making me go crazy:( he acts so immature like back chatting as if his 5!! n wen ppl jus keep going n going u end up breaking dwn.this is the point where i get to everyday!!! also awhile bak we were discussing his mates wedding,i cracked it at my bf cos i find it disrespectful that they kno we r r cuple n dey r puttin him wit dis other girl.im not jelous im nt in it or anything ive always thought u wud put cuple sin a wedding,thats how i wud anyway.so bak then my bf sed he wont do it.jus today his mate called him goin on about the wedding and my bf jus went on like it was all cool. my bf and dis chik had r thing for eachother years bak,nufin happened between em bt i still feel uncompfortable knowing my bf is gona be eating wit her, drinking wit her, having photos wit her,dancing wit her ect...i have told him if he wants all that im not going. i mite b pregnant and he keeps stressing me out,i cant handle it n i dont kno wat to say to him.could anyone help im so tired of crying everyday...i also lost my virginity to him so it makes it real hard to get up n leave