34 weeks with bad pain TMI

Melissa
So I'm 34 weeks with regnant and the past 3 days I've had diarrhoea and bad heart burn to the point I'm throwing up along with lower back pain and my stomach hurts a lot like its aching .. has anyone else exsperienced this ? I'm a first timer and I'm completely lost also I have been hearing little crack/popping noises does anyone know what it might be ???