Antidepressants and the big O

My husband and I have been married for 7 years and have had an amazing sex life. We both could be satisfied (myself multiple times) in less than 10 minutes. Well I started taking an antidepressant about a month ago, and can't seem to achieve the big O.

Has anyone else experienced this? What helped? Also, I'm 31,and we are ttc and I want to enjoy the process. Lol