the official response is no you should not go. you will also note many different signs on rides that will say "if you are pregnant you should not go on this ride". the safest thing to do is not go on them. if however you are adventuresome then you may want to give it a try. i doubt you will be harmed this early in pregnancy. i think the real issue is how much do you want this pregnancy. if this is planned and a very desired pregnancy then don't do it. otherwise you need to figure it out. your doctor will tell you not to do it.
if i'm 2 1/2 weeks pregnant is it safe to ride roller coasters and water rides at a theme park?