I'm Rhesus negative and my baby is positive, currently 24 weeks and have anti d due in a few weeks. Am on holiday in Spain and have banged my belly on a door handle which has left a light bruise. I'm worried in case I need an anti d injection, no idea how to go about it here or if I'm over worrying. I didn't bang it too hard, it doesn't hurt but there is a light bruise. Does anyone know how hard the knock needs to be to warrant an injection? I've read a fall or car crash? Photo attached, thanks:)