I came across this article and it really helped lessen my worries. I'm not sure whether we are allowed to post links. I hope so. If not, apologizing in advance. Just spreading the knowledge.
Thank you for posting this! I miscarried in August and now I'm pregnant again. Naturally I've been a complete mess. My first ultrasound is on Friday so I'm praying for good news this time! It's nice to hear I'm not the only paranoid one.
Re: Extremely helpful - eased my worries