Please help a girl out

So I had a c-section 3 weeks ago and gave birth to twins... after I repeatedly told him would very much LIKE to Jack him off or give him a blow job (I have a high sex drive and feel just because we can't have sex doesn't mean the fun should stop and he knows it gives me pleasure to give him pleasure...) I caught him masturbating this morning and know it's not the first time... I am deeply hurt by this. As I know he wasn't thinking of me and I can't help but feel it's because I gave birth and I don't look the same anymore. And plus i have asked him before not to. That's what i am there for... to see to ALL his needs... Why does he keep on rejecting me but goes to masturbate secretly... am I not good enough...