Pre-training dilemma

In order to begin my formal marathon training on June 20th, I need to accomplish my pre-training goals. Specifically, I need to be able to do four 30 minute runs per week for two weeks. Note that I only have a little over three weeks to ensure that my body is in that sort of shape. I can probably do it. I'm actually pretty close to there, but not quite.

As mentioned previously, the two things that might keep me out of the marathon are injury or illness. I've no control over the latter, but the former is a concern. Specifically, my left leg hurts. I have weird pain in the back of the leg and the ankle and nothing I'm reading quite describes it. I don't want to try and "run through the pain" as this could lead to the injury I fear. However, I have to run to get into shape for the training. To that end, I've decided to skip my next two scheduled runs. Instead, I'll do some upper body work, but for the most part, I will be using RICE: Rest, Ice, Compression and Elevation. Today I worked from bed, with my leg up and ice packs on. I've been taking ibuprofen for the inflammation. The leg doesn't feel too bad, but I want to give it plenty of time to heal.

Too much time and my training schedule slips. Too little time and I injure myself and can't train at all.
Is it like a calf spasm or tendinitis from overuse? Typically ice is better acutely where an area is red and inflamed, otherwise a heat pack is better to help increase circulation to the area, also herbal plasters applied topically could help with pain and circulation
I don't know what it is. I don't have problems like this often enough to know what's going on. That's what being a couch potato for 20 years will do to me. It's pain that seems to go straight up and down the back lower portion of my thigh and calf. Also, my ankle's a little sore if I move my foot out. It's not a bad pain, but it's not the normal pain I associate with muscles healing.
Do you stretch out before running and afterwards? The reason I ask is sometimes the pain you are describing can be caused by over stretching the leg and then running on it or running on it and over stretching afterward. -- It is just a thought. good luck with the healing.

btw hugs

I stretch afterwards, though probably not as much as I should. Stretching beforehand is discouraged as the body has not yet had a chance to loosen up.
some light stretching b4 hand is supposed to be good for making the muscles a bit more loose. then you should do the reg stretching to cool down --- but then again I am going off of info that is about a decade old. Still hope the leg heals soon
aww yes the RICE treatment, that usually helps with runners. let me know if you want a rubdown, i'd be help to try to help you out.
If it's straight up the back of the lower calf it might be tendonitis. I've had that one from overuse before and it wasn't fun. Stretching after it hurts won't help at all. Lots of advil and acupuncture were what worked for me.
Regrettably, the more I read about it, the more it's beginning to sound like it. It's not bad, but it's enough to notice. This isn't good. Here I am, just deciding I want to do this and already I have a potentially sidelining injury :(