I just worry, worry...

Three more weeks and I'm out of my first trimester! Thank God... I am so fearful of a miscarriage and I can't even help it.. My sickness has came and gone. Which worried me, my boobs aren't sore today, which is worrying me, and I feel like I have too much egg-white watery discharge which worries me (sorry tmi) we've already been to the doctor at 8 weeks they said the baby looked great with a heart rate of 170... But in keep worrying! Anyone have any advice to put me at ease?