is corion 5000 iu safe to take during 18months pregnancy while travelling not happen anything ? My placenta size 26.8mm was on 1st,july-2011, on that docter said not travel due to low placenta, i would like to know how the placenta size should be? after that we consulted another doctor for 2nd suggetion, she told us that by taking Corion 5000 iu injection we can go by train and nothing will happen. if take this injection any side effects will come or not, please advise? we have to travel upto 21hr by train. docter said not go by AIR. Can you please advise on my query ? thanks a lot for answer in advance. Sunitha