Didn't knw i was possibly 2wks or possibly 3days preg when i got a whole body ct scan done (passed threw 3x in 1 session) i am scared i harm my baby.

It's mathematics: Any damage done at 3 weeks will occur in a cell that is still destined to divide into so many cells that they will make up too large a percentage of the final organisnm for it to survive. Bottom line: if there was any damage you will probably miscarry; if not, the baby should be ok. If you make it to 20 weeks, see an obstetrician who specializes in high risk pregnancies.