I want to have sex.

My fiancé has been completely ignoring my sexual needs. We haven’t had sex in about 3-4 weeks and I tell him (in a kind way) that I miss having sex. We used to do it every 2-3 days. He never initiates anything so today I got tired of it and starting playing with him down there and eventually I gave him head only for him to tell me “he’s too tired” and that if we did do something “we better hurry” Im going to sound like a complete bitch but it makes me want to look for sex else where. Im sexually frustrated :/