34 weeks and 4 days i need advice

Im so tired, my belly is to low, i get cramps on one side of my abdomen and down to my leg, my vagina feels swollen, my back hurts on one side only, im so tired, even if i just squat down to pick something up i feel worn out, im just so frustraded off feeling so sick i cant even walk because i start feeling nauseous and like im going to faint plz give me so advice so i can feel better....