I'm in my 35th week and suddenly I feel the need to poop every few hours! It's not constipation or diarrhea, but I actually have to go almost three times a day now. Before I was pregnant I went daily or every other day and my diet hasn't changed much but starting this month, I even wake up in the middle of the night because I need to go. I'm also extra gassy in my third trimester. Is this normal?