Sore, swollen left side of tongue

Hello,

I had what I believe to be a flu a week ago. During the last stages, I had a sore tongue on the left side and a swollen bump. There were some very small ridges on the right side of my tongue, but they weren't so bad. The flu/cold left and the sore tongue went away.

However, last night the sore tongue came back, as did my other symptoms. This is odd, since I've felt great for a week. The return of the sore bump on my tongue corresponded exactly to my symptoms returning. Yesterday was a bit of a stressful day at work, but it still seems odd.

I'm not congested/coughing, I just feel very weak. I took my temperature, and it was low (around 95). Any ideas? I called my GP this morning, and have not heard back all day. I know he's busy, but wish he'd return my call (sounds like I need a new GP!).

Thanks so much for any input.

Nathan