I have been doing a bit of reading and i read that marijuana does not reach the foetus insted the thc sits in the amniotic fluid and is there before pregnancy.I smoked for nearly 3 mths with my first son as i didnt know i was pregnant.I was so scared the doctor said dont worry about it he will be fine.I didnt know last time why i was sick and each time i had a bong i felt better in the stomach.I gave up when i found out.He was born a week early and was 6 lb 12oz so a lil small i wonder if that was pot during the first 2 and a bit months ? Theres nothing wrong with his learning or brain.There might not be any proof it effects babies but i it kinda scares me.In about 3 or 4 weeks the baby will be tested amniocentisis to check all is fine with him.Until thenwhen i feel sick i just lay down with my bucket lol.