Anyone else feeling a little anti-social since having their baby...?

I was always someone with a million friends and plans! Dinners, lunch, bars, always wanting to hang with my girls. Even after I got married! Since having my little guy (he's now 4 months), I feel like all I wanna do is be home with him and my hubby. It sounds so bad but I just don't care about friendships as much as I did before..... Is this normal? I'm feeling like a bad friend who doesn't make time for anyone and never thought I would become this person! 😬