Sex with husband

Hello, I have a question about relationships once you are married....

I get the feeling that my husband is not sexually interested in me.

We have only been married a little over a year and been together for almost 3. He never gives me compliments, never really comes on to me. Sometimes he will ask for a bj. I haven’t made any drastic physical changes and I would say for the most part we have a happy relationship. I am getting a little discouraged because anytime I come on to him he says he is not in the mood.... he has a headache, belly ache, had a long day, too tired and so on. What should I do? How do you keep your man interested?

I have also come out a few times and ask him if he would like to try anything kinky (answer was no). I have asked him if I was doing something wrong, I have also asked if he has lost interest. He always verbally reassures me everything is ok but his actions make me think something is wrong. I don’t suspect any cheating either.

Please help! What should I do?