Does this seem like Bone cancer, Lymphoma, infection, or....?

Hello - 

Does this sound like Lymphoma, bone cancer, infection, something else?

39 year old male.  Generally healthy.  Not a hypochondriac, although I can certainly see how people can be given the past couple of months I've been through...

I had a spot on my left forearm about 2 inches up my arm from where my wrist bends that felt like a bone bruise.  (If palm is down it is on the side of my arm up from my thumb) .  Very small spot and it would only occasionally bother me out of the blue for about 2-3 months.  When I tried to feel for it, I couldn't except for one or two occasions.  I also don't recall hitting it.  Some occasional achy bone feeling in that area.    I also have had a couple of nights where I wake up drenched and my sheets are wet, head to toe.  Then, out of the blue, a painless lump developed on the top of my arm in the same spot about 4 weeks ago.    The lump seems as hard and normal skin and is only barely noticable.  I get occational sharp pains in the area and up my arm a bit.  My bloodwrok has come back normal (CBC, Kidney, Liver, Diabetes, etc.).  I was also tested for Rheumatoid Arthritis and inflamation.  All normal.  My doc sent me to an orthopedist, who thought maybe carpal tunnel, and gave me antiinflamatory medication and a brace for 3 weeks.  No changes.  In the three-four weeks since the possible carpal tunnel diagnosis, I have noticed a fullness in my neck that comes and goes, occasional tender spots on my upper arms/armpit,  occasional tender upper chest/shoulder areas, a tender/painful rib and lump on my right side (the pain and lump on my rib comes and goes) and now tenderness in my groin on the right side.  I also get burning pains in my ankles and upper feet and a tightness in my mid-back.  Nothing is constant except the lump on my forearm.  I went back about a week ago for follow-up.  He then did an in-office ultrasound and found a fluid looking growth that goes deep into the space between my Ulna and Radius and wraps around the bone a little.  He studied the ultrasound for what seemed like 5 minutes, then said "I think I want to get an MRI of your forearm, decide what other tests need to be done and go from there".  I had the MRI Thursday morning.  It is now the following Monday afternoon and I haven't received a call.  I'm certainly getting more and more nervous, although my "calm brain" is telling me that if it was serious, they would have called me right away.  

No fevers, occasional times where I can't seem to cool off, no swollen lymph nodes that I know of (but it is hard to tell), a little more tired than normal, normal blood work so far, no weightloss, no loss of appetite, occasional itching but not intense, and again...everything comes and goes, sometimes within seconds.  Thoughts?