Emotionally detached?

Hey guys. So I have a strange problem.

I don’t know why I am but I feel very emotionally detached from everything and everyone. Like I obviously know I love my mom and family but I just don’t feel like having sex or cuddling or really any emotions towards anything. No sadness or happiness. I don’t cry at the movies I used to cry at, I don’t feel joy towards the things I felt joy towards. I’m just wondering if this is normal? I take my antidepressants every day like I have for a year and yet... now things are weird. Help?