Stomach pains- miscarriage?

Kathy
I had a miscarriage at about 5.5 weeks back in September and now am pregnant again and about 4.5 weeks. I'm experiencing occasional pain in my stomach and I'm worried I'm on my way to another miscarriage. My first prenatal appt is may 11. Should I try to go sooner? Do I just let it go and not over think it?