Blowjobs and Pregnancy

I'm 12 weeks 1 day and I haven't been wanting to give him any head lately. especially now since i'm sick and my nose is stopped up. But all i keep hearing from him is that I'm not doing the things i would normally do! I know communication is a big factor but me telling him that I don't feel like it would be death to his ears or something. I haven't been wanting to have sex for about a week now either but once we actually start I'm all for it! Like whats my issue lol😅. I think ima have to force myself to do it but I don't want to because i won't be enjoying it myself.