I'm 5 weeks pregnant can hevay lifting cause any damage to baby? i picked a door up which i didn't think was heavy but was so much heavier than i thought. after a few secs i let it go and now i'm so worried i did damage :(

No, not an issue: Hi, please do not worry (although I know it’s hard not to). At 5 weeks, the baby is so small, and so cushioned by the strong muscle of the uterus, plus your muscles and other tissue, that it would be almost impossible to do damage. You should be getting an ultrasound in the next few weeks to establish your due date (in most places) and you will see that all is well! Let me know!