Experience with Lexapro or any SSRI

Co
I am 24 years old and had my second baby 4 months ago. After she was born I struggled with anxiety and became a germaphobe. She was born at 34+6 and was in the NICU for 5 days. Long story short I went on Lexapro for my anxiety. I have been on it for 3 months now at 10mg. I am so exhausted and I have no motivation whatsoever. I have been extremely hungry as well, in turn, I have gained about 7lbs. I'm a young mom of a 5 year old and a 4 month old and I want to be able to enjoy everyday with them, but when I'm on this, all I want to do is sleep, sit, and eat. I was not like this before this medicine. I don't even want to have sex with my husband because I am so tired. Has anyone had any experience on this medicine?