Anyone else on their third pregnancy?

Almost 33 weeks with # 3 and I wake up feeling like I'm about to die everyday. Severely out of energy to the point I'm even irritated with my husband. The bulging varicose veins on my legs, spd and herniated disc don't bother me as much as this exhaustion.

I take iron pills for low iron but I dread waking up because it's been like this for two weeks now.

How is everyone else doing?