Opinions and Advise needed...

Anyone else 39 weeks with nausea, heartburn, gas, and light headed...tell me what's this about labor soon or just a bad day I am 3 1/2cm dilated 70% effaced and baby girl is position at a 2 last I heard which was 4 days ago I've done yoga, stairs, stretches, and walking every day few times a day since then now this is how I feel since last night I dont see my OB for another 2 days