If I were you, I would ask your doctor that question. I have a coworker who is pregnant and asked her doctor about riding the rides at Disney....surprisingly, he said it was okay. I think everyone's situation is different.
Mary Lou Scanlon
NCL Pride of America April 24, 2010
NCL Epic February 12, 2011
RCCL Allure of the Seas - September 18, 2011
Celebrity Eclipse - February 11, 2012:
RCCL Navigator OTS - February 9, 2013