Anxiety going into week 7

Sa
So far this pregnancy I have not had a lot of fear about miscarrying, last time it was all I could think of. This week is different, I am 6w6d and tomorrow I will be 7 weeks exactly. I had my miscarriage when I was in my 7th week so I feel like I will be holding my breath all week just praying to get through it. I will be so happy to hit next Saturday and be past this point. I have already had an ultrasound and we saw a heartbeat, I am so sick, I know deep down that this time it's different but I can't help but worry.