any else experiencing prenatal depression/ anxiety

I woke up this morning feeling so depressed. Lately I have been worrying that my marriage is going to disappear after I have this baby. In a selfish way too though. I'm not worried that I am going to lose interest in my husband, I'm worried about the other way around. For some reason I can't wrap my head around the fact that he can still love me just as much as he does now, after the baby comes and he is sharing his affection. And I'm worried, to top it all off, that I'll be this ugly used up thing after having the baby which even furthers my fear. I know all of this sounds selfish. Has anyone else dealt with something like this before? If so how did you cope