Advice needed

Hey ladies! So my husband and I are ttc, but it’s not going very well. He’s always super patient with me and waits for me to initiate sex. My issue right now is that I really don’t want him seeing me naked or touching me. I’ve always been super self conscious about my body and weight but it’s gotten worse since we’ve been married because I’ve gained about 15 pounds. He tells me constantly that he loves my body, thinks I’m sexy, etc. but I just can’t seem to get out of my own mind. I’ve tried lingerie but it just makes me feel stupid. We’re still having sex, but not regularly enough to give us a good chance to conceive. Does anyone have any advice?