I understand you completely. It's your husband who confuses me. He doesn't mind you doing it for fun, but doing it for an actual monetary income is out of the question? That just seems weird to me and it seems to me that he just has to let go of his connotations with whatever he deems as prostitution and what isn't. Whether you get paid for it or not, it's still the same thing. And you only see each other for seven hours a week?? Communication issues and rarely seeing each other; This seems like a good ingredient for the start of a rocky marriage. Well, you've already done it after he clearly said he wasn't comfortable with it, so I would just openly flat out tell him what you've done. You're married to him so don't keep secrets. Yes, he'll probably get mad, but just explain to him everything you've told us here and take whatever heat he dishes out and apologize.
Also, ******** just about a good handful of these comments made in this thread. Name calling and even hexing the future for someone's child is just down right immature.