I’m having so much pressure on belly what does this mean?

I’m 36 weeks 2 days & the past 30 minutes I have been having crazy amount of pressure on my belly, it’s not painful but it feels extremelyyyyy tight & feels like my stomach is stretching, and it’s hard to stand straight, I can’t stand for long because of all the pressure, and I’m having Braxton Hicks, it’s hard to explain but what does this mean? Idk if I’m starting early labor or not