Bookworm - you have gotten some really good advice above. It may not sound like it and it may not help at this moment. I don't know where exactley you live, but are there no alternatives for transportation? Then certainly you should consider the advice to contact you teacher (if you haven't already), and continue keep practicing what you already have learned.
I am sorry that I don't recall more about you, but is there more going on that what you mentioned in starting this thread? Truthfully I don't ask because I expect to solve you problems so much as getting you to talk to us about it. When people are really down, it may seem more trouble than the expected outcome is worth. I know, have been there and done that. However, just knowing that there are people who really do care sometimes helps. When we are down, it is sometimes easy to forget that.
I wish you well. Don't forget that I and others here do. And no need to quit posting. I haven't been active in MA for a while due to some health issues. I got pretty much past them, but didn't find opportunity to continue training. I am now trying to get back into self training and stretch now (ouch!). Even if you can't easily do that now either, you still have things you can contribute to all here at MT. Don't take that from us.