Sex stresses me out...

My husband and I have been married almost 2 1/2 years. When we first got married my hubby couldn’t keep it up so we didn’t have sex then we moved in with his parents and he was working constantly so we didn’t have sex until about 9 months ago.

I love my husband so much but when he wants to have sex it makes me so anxious and I get so stressed out. It’s mentally exhausting knowing that he can’t keep it hard for me. I feel worthless and ugly. Like if I was skinnier he would be able to be hard. If I tried harder or was more sexy it would be easier.

We want a baby but I know that to have a baby I have to be willing to have sex more than once a month. Please help me.