5 weeks, so much anxiety

I'm currently 5 weeks pregnant today, and I'm starting to get really anxious. My last 2 miscarriages happened in the 5th week, and I just want to get through this week successfully. I started having some mild cramping this morning and I feel like I'm reading way too much into it. I got to the doctor tomorrow to get my blood work done again and have my first ultrasound, but I just can't shake this anxiety.