29 and faking orgasms

Yall. I’ve been married for three years and together with my hubby for 4 and last night was he first time ever I’ve faked an orgasm. I was exhausted and it just wasn’t happening for me. Am i horrible?! I didn’t want him to feel bad that i jusy couldn’t last night and we’ve been trying to get pregnant for over a year so it kinda takes the fun out of it sometimes. I work full time and go to school full time as well. Anyone else have this issue? What do you do about it?

We usually have amazing sex i just wasn’t there last night. Wasn’t happening. Lol