WONT GET IN THE MOOD!

Elena
Hey Girls,
I'm almost 25, have a 2 year old, been married for 1,5 years and together since 2012...
Soooo all the way until my son was born, wich was April 14th 2014 we had a lot of sex! 
Now even after 2 years I don't feel like doing it...I mean I do it sometimes for him and because I know he has needs and while we do it I guess I enjoy it but the urge to do it isn't really there! If it is, it's so rare!
I tried to explain that I'm in mommy mode all day and when our son goes to sleep it's hard to snatch out of it 😑
IS ANYBODY FEEL HOW IM FEELING SO I KNOW IM NOT ALONE?