Only 34 weeks...

So I’m only 34 weeks. Baby has already dropped a little. I know the baby can drop early anyway but i can feel him engaging. Braxton Hicks are a lot stronger and i can barley get around (This is my 2nd pregnancy my daughter came one day early) i just feel that he is huge and when he moves my whole stomach waves and it hurts. I go for an ultrasound Saturday to check on him but has anyone had expierence with this and still go full term? Just nervous little guy is comming earlier then i would like...

Maybe i have more amniotic fluid this time ?? Thoughts?