hey!! well for staters congradulations!!! this is just the beggining of the rest of your life!
ok well to be honest theres no need to worry so much as to the type of home ur baby has the main priority as u no is that he/she has loving parents which in this case seems to be the case but chicken there is NO such thing as a 'normal' family, home, living arrangement etc! every family is diff, seperaton is alot more common now adays than 30 yrs ago!
if you feel that ur fiance has only asked u to marry him bcause of the baby then sit him down and calmly ask him 'are you marrying me for ME or our baby?!' 'if we wern't in this situation would you still ask me to marry you?'
these are questions you need to no the answer to!! JUST because you both are having a baby DOESNT mean you need the extra stress of marriage! ehy not just take it slow??
have your baby and then AFTER that,talk about marriage!! theres no rush honestly! you wana no its for the right reasons that he has asked you!
i really do wish you the best of luck and if ever you need to talk im ere!
best wishes!! xxxxxx