What Foods are we not supposed to eat??

Im approx 6 weeks pregnant have doctors appointment next week to confirm and arrange scans etc. Just wondering what foods should we not be eating or are any foods particularly dangerous to the baby or anything?? A girl i worked with was pregnant last year and i remember her mentioning something about mayonaise and raw eggs and it was just when i was making my lunch this morning that i thought of this again !

Woodstock has a sticky up above with all the foods in it. Pastuerised mayo is fine, so anything in a jar you can have!!! Congratulations