What do my symptoms sound like?

Around 3 weeks ago I had a rash/possible tick bite appear on my right upper thigh (I live in the country so ticks are nothing new). A few days after that my joints started aching, especially in my knees, wrists and ankles. I went to see my doctor that week and she wanted to wait a few days to see if the rash turned into a "bulls eye" rash, thinking I possibly had Lyme Disease. That friday my left calf suddenly swelled up to twice the size of my right, was hard as a rock, and had a radiating numbness/tingling sensation in my left leg. I called my doctor and she had me come in right away, she thought it might be a blood clot so i was then sent to the hospital for an ultrasound of left leg. No blood clot was found. Along with the swelling, my feet have been unusually cold and have been turning blue/purple.

Additionally, for the past 8+ years I have been battling with a persistently swollen lymph node in my neck. I've met with a surgeon, and he has talked about Hodgkins Lymphoma, but stated that usually with Hodgkins you will have a chain of swollen nodes, not just one massively swollen one. But said he wants to keep an eye on it, and need be biopsy/surgery is an option.

My primary doctor reffered me to another doc. for a 2nd opinion this week, my new doc. doesnt believe its lymes. These are the tests she is running right now.
-Scrofula
-Parvo Virus B19
-Vasculitis
-Juvenulle Rheumatoid Arthritis
-Lyme
-HIV
-Leukemia
-Lupus

If anyone has any suggestions I would greatly appreciate it.
My mother thinks I should have an MRI done to make sure there is no blood clot that was undected by the ultrasound.

BTW: 20yr Female, Wisconsin

Hello neighbor I'm also in WI

First of all there are several test for Lyme disease and most Dr's do not know about all of them. I watch Discovery Health Channel a lot and have seen several cases where ppl were misdiagnosed after their Dr missed that they did have Lyme disease after they ran tests on them and said they didn't have it. Some of these ppl suffered for years before finally someone figured it out. Once you are that sick it can take up to a year or more after treatment to feel better. Please do not wait until you are this ill.

See if you can get a Dr to treat you for it anyway or find out about all the tests they can run. I am not a Dr so I don't know the names but if I remember correctly there are 5 different tests for it now. Not all Lymes disease gets a rash.

Please read the links below and do more research.

Get well soon!

its quite possible you may have been bitten by a spider