Twins?!!?

Yikes, the thought of twins popped into my head last night when I was wondering why I was getting MS so early this time. I didn't get it till around 7 weeks each time with my last 2 pregnancies, but I started to feel a little as early as 4 weeks and it's pretty established in week 5 already. Twins run in DH's family. But, I really would like to take my babies one at a time; I really hope there's a reasonable twinless explanation for such early MS. Twins scare me because I'm sure I could handle more than one 2 yo at a time (lol), and also, not sure if it jeopardizes my chances of a homebirth which would really stink big-time!