husband masterbating?

I had our son three weeks ago and myvsex drive is through the roof. 
My husband refuses to have sex with me despite my dr clearing me and his " intense sex drive" 
Last night we were talking and I asked if he's been jerking off Bc it doesn't make sense how he's refraining and his actions lately. He said yea all the time.. i said where am I he said in bed or walking around the house.. 
I feel so annoyed last time he found porn in my tablet he made me feel so dirty like that intimacy was supposed to be together not alone. 
I'm prob being crazy but I'm so angry and hurt I cried all night and he said then you wonder why I don't want sex from you