Pregnant after Miscarriage

So I had a miscarriage in July at 6 weeks. My first pregnancy. Baby had a good heartbeat. Dr said all was well. Well it wasn't. I miscarried 2 days later.

Fast forward to now, 7 months later, I'm pregnant again. I haven't had any bleeding or spotting. But I am freaking out. Every little twinge or pain in my abdomen or back makes me think the worst. One day myboibs hurt, the next they don't, then they do again. Who else has gone through this? Obviously I need to make an appt but it's too early. Just want some reassurance that I am, in fact, just being overly crazy and things are probably fine. (I'm 35 yrs old btw.)