E.W.
I am a firm believer that there is no one better than a mother to raise her child. I don't know what the reason you have her in daycare is, but if I were you I would do everything I can do to continue being a SAHM mom. I don't think that there will be any psychological issues, but I know that when she is older she will appreciate you being at home for her. A daycare is hired help and cannot love your daughter the way that you can.
I would suggest reading Dr. Laura's newest book "In Praise of the Stay-at-home-mom"
Good luck, and I hope everything works out for you.
(Before I get completely bashed by all of the other moms, I know many people have different reasons for taking their kids to daycare. I am just saying that if you can find a way to make it work, then make it work. There is no worse feeling than not being there to kiss your child's boo-boo's, watching all of the "firsts", and being able to teach your child the values and lessons that you and your husband want instilled in them)