Exhaustion and feeling unwell

I’m struggling. FTM. 38 weeks. Haven’t been able to sleep for about 10 days. I was able to sleep before but would get up several times. Now I doze off for an hour or two total but not consecutively and never get more than 2 hours.

Between the heartburn and carpal tunnel/radiating impinged nerve type arm pain, I just cannot sleep. Still working full time (not from home). I know it has caught up to me because I feel generally unwell now - like my body aches, I have a headache, I feel lightheaded, and so tired I feel like crying. But at every one of my weekly appointments, Dr assures me all these symptoms are normal and just part of pregnancy. I don’t know how I can keep functioning though. It’s hard to tell whether I’m just worn out completely or actually sick. Is this normal?? I don’t know how I’ll make it another 2-3 weeks/ be able to get someone to take me seriously that I feel as though something is wrong.