antidepressants and sex

Co
Hi everyone , I'm very curious on feedback because this is my first time ever being on medication for my depression. I was started on Prozac (Fluoxetine) on easter so roughly about a week ago and I noticed that since starting it I've been having a harder time climaxing during intercourse. It's about nearly impossible the last two times I've had sex and it's incredibly frustrating. I did read the side effects before taking it so I'm not sure if it's in my head or if I'm actually experiencing this side effect. Would really like some feedback since I've never had this issue before taking medication.