Sex life

My soon to be husband and I have 3 year old together. Before she was born we did it everyday sometimes more than once. It was a great sex life. I had her vaginally and ever since then I’ve had a hard time feeling good. He’s not small he is a good size but a lot of the time I’m just laying there now feeling no pleasure. It really sucks. We probably only get to have sex once a month now. Any tips or advice? does anyone have this problem?