Do you girls ever have to beg your men for sex?

My man always says “he’s tired” but he’s a salesman.... not a construction worker. I’ve never had to beg any man I’ve been with the way I have to with him and this is my most serious relationship. It makes me feel unattractive. I’m questioning our relationship at this point because wether it’s “right” or “wrong” to value sex in a relationship or not, it’s a huge deal for me. More context: I’m 25, he’s 28, we’ve been together for 3 years and we constantly talk about getting married and having kids.