anyone else super worried?

I have absolutely no reason to be worried right now... No bleeding, positive tests, ect. I have a perfectly healthy 3 year old. But I am FREAKING OUT. The possibility of miscarriage is making me crazy. I'm only 4.5 weeks, due May 17th according to LMP. I go for a consultation with my OB on Wednesday. I think I'm going to beg for lab work, ultrasound, something! I feel I am making myself sick with worry. I'm an anxious person to begin with, but this pregnancy is consuming my mind! Anyone else feeling this way?