On September 4th 5th N 6th We Going For A

On September 4th 5th n 6th we going for a picnic....on the 4th we will travel in a car for 7 hrs then the next day on 5th we will b on a train for almost 12 hrs not continues ly but with 2 or 3 breaks of 2 to 3 hrs .....so I will be 16 weeks n 5 days on the 4th ...so is it possible for me to travel....this is my 3rd pregnancy. ....n my iron us also low so I take extra iron pill beside folic acid pill