Need help ASAP

Kayla
OK so long story short 2 weekends ago my fiancé slept with some chick after I told him we needed a break for the day and the last few days he's been asking me for sex and I can't get myself to feel sexy or turned on (I'm 39 weeks 5 days). All I can think about is him and her and it's super depressing. What advice do you ladies have to help me get over this? It's hurting our relationship...