How long did you wait to have sex after finding out your pregnant?

How long did you wait to have sex after finding out your pregnant? It's my first pregnancy ever. I'm 4 1/2 weeks along with the hormones starting to increase I'm sure you all can relate to feeling extra randier than usual. My husband and I don't know if we should wait until after my first doctors visit to get the okay or just go for it? I'm nervous it's going to make me bleed or something?!