At 34 weeks, you'll most likely have braxton hicks contractions fairly often. With my first pregnancy, I wasn't sure what they were until I had one at my doctor's office and she said that is what it was. For me it wasn't painful (though for others they can be), but felt like the baby's head was pushing out of my stomach. My stomach would tighten and get hard like a basketball for several seconds and for the longest time I just thought it was the baby moving funny...