Am I selfish !?

I know there are a lot of women out there that can't have babies so I'm extremely thankful for my handsome healthy son but he's been so fussy lately and I'm just frustrated and feeling like giving up. He's exclusively breastfed and I'm having the hardest time getting him to take the bottle on top of his fussiness. I think it's his 4 month growth spurt but I'm just about ready to leave him with my husband and walk out for a few hours. Is that selfish !!? I feel bad even thinking about it. 😢😢