Yes, parents love for a child is indescribable and that's neat how much respect you have for it and shows your integrity and character...
You say you don't have children, so cannot totally fathom that kind of love...yet there is a different kind of "baby" you had and/or a different kind of "child" you now have growing inside you. When you got clean and sober, that was a rebirth. Perhaps you need to take a look at your sobriety as you would PROTECTIVELY view your new, growing, child. Whatever you decide to do: move back, stay with parents, PROTECT your sobriety.
AND, protecting your sobriety is much more than making SURE you don't drink or use...it also has to do with not letting yourself get back to a place/condition you were in that led to your addiction. Hugs, friend.