Always good to see doctors. FWIW, here's what I do in situations where I suspect something is a spiritual manifestation but I go to the doctor just to be sure...
If the doctor shows any sign of being confused or puzzled...starts talking about maybe trying tests or this or that.....but gives off an air of bafflement.....thank her/him for the visit and don't take the pills or the tests or whatever.
if the doctor seems confident, favor her/his advice (with care...watching for the point of bafflement if it arises).
This sounds simple minded, but it's always served me well. For example, I had my kundalini eczema rash checked out by a dermatologist. He scratched his chin, said "wow, that's interesting...." and gave me both cortisone AND anti-fungals, since he had no idea which direction to go in. I knew, then, that it was indeed spiritual and not something for medical treatment. Whenever a doctor seems confused by my symptoms or test results, I assume it's spiritual. There is a very sharp line between spiritual symptoms and medical symptoms. The stuff that baffles doctors and scientists is stuff that's going to keep on baffling them until they start understanding things the rishis understood centuries ago!
Finally, hopeless meditator, night sweats are famously one of those ambiguous symptoms that make doctors either hazily annoyed or greedily ready to try lots of stuff. Have a look at this:
http://en.wikipedia.org/wiki/Night_sweatsUnless you have other symptoms, this might be one thing to just wait on a while. But follow your instincts.
Oh, and as a PS.....if doctor's are baffled but something's 1. really scaring me and 2. can't be explained by classical spiritual materials, you bet I'll let them work through their bafflement, and I'll take the tests and meds. It is, we must acknowledge, possible for docs to be baffled/confused over a genuine medical situation!