Less Sex

Lately I’ve been finding myself not wanting to have sex so much lately. My boyfriend and I have been together for 3 years and we have had some amazing sex in the past but I feel like I’m losing interest. Is there something wrong with me? I need advice y’all.! What can I do to spark back up our sex life. He’s been watching porn lately to please himself because I had a procedure and I can’t have sex for two week. I don’t mind him waiting porn but I don’t want him to have to turn to porn too often to please himself.