Paranoia

Hi ladies! I'm currently 4 weeks pregnant, however I suffered a miscarriage last August. So  finding it hard to be overally excited as I'm pestermistic due to what happened before. Every time I go to the toilet I'm paranoid when I wipe  I will see blood! Anyone else experience this?! I just want the next 7 weeks to go by fast! As think I will feel better once had first scan!!