Lourage

Well, i've had a pain in my left leg since around Christmas time, the pain isn't excruciating in anyway, but it's there, sometimes i just get it all of a sudden, but i mostly feel it when bending my knee, in the inner part on the outside, sometimes it feels like it travels to my calf. I also noticed that my leg has what feels like swollen areas on the inside part of my thigh, but i really can't tell if my muscle is just bigger in that leg, but i don't feel them as much as in my other leg.

Now the problem is my doctor of a few years no longer accepts my health insurance, and i been waiting to receive a updated book of what doctors in my area accept my health coverage. trying to find some online they are all either no longer accepting my health insurance, or it's the wrong phone number! you'd think online would be updated more than the book, but the customer service rep said they will send me a new book ( which i'm still waiting on)

So in the meantime i decided to try and get another appointment from another doctor that i used to go to years ago and just pay for the check up. Whats weird is some days the pain feels fine, others i notice it more. it's not like a sore/torn muscle pain, since i lift weights and know what those feel like. Although i have noticed in the past my left leg is always more tight when doing certain leg exercises, and heel stretches, so maybe something is just wrong structurally? Anyways i can't seem to get an appointment with this doctor until next week, but now that this pain wont go away and after reading up im worried i have either a blood clot, or leg cancer ( am also a hypochondriac incase you can't tell :P) After reading somes tories on here it has me scared silly about how it could be serious, so i'm wondering if i should make a visit to the ER? The thing is i feel silly going to the hospital with this, since it's not even that painful, and i can walk perfectly fine, but like i said i'm worried it's something serious. What should i do? I was recently at the hospital a few months ago with head pain thinking i had a brain tumor, tests came back fine, so i'd feel like an idiot going and be told "yea it's just nerve damage" should i just go for peace of mind? or just wait another week to see a doctor since it's already been about 4 weeks anyway?