transitioning jobs want to use time to go to intensive treatment in Germany for lyme

so I'm in need of advice usually I go to my dear husband but now that he left me I don't have anyone to ask for solid advice. I can't seem to think clearly

So my condition has worsened over time due to not continuing treatments
I'm about to accept a new job offer.
Should I take 2 weeks off while I'm with my current employer or wait till I get my new job and ask for two weeks off?
Would I qualify for Short Term Disability? I figure most places including gov't do not recognize lyme as a disability or any thing for that matter?
What are the pro/cons?
So far I can only think of these:
taking two weeks off with current employer at the same time putting in my two weeks notice is pretty much burning bridges but what do I care, I'm leaving
I won't be paid
If I go with my new job it would be two weeks of paid leave and I would be covered under some sort of health insurance not that the clinic accepts it.
But just incase something goes wrong .
It wouldn't look good to be hired on and immediately take off two weeks of leave?

Thanks

I think Peteza is right that it's not good to burn bridges; however, lyme often puts us in abnormal and difficult circumstances that healthy people don't get put into. If the only way to get to Germany in order to due a treatment is to burn a bridge, I think you probably should do it. I'm not sure how much you've looked into the treatments in Germany. They may require more than 2 weeks. If so, you may need to tell your new employer that you had a prior vacation scheduled, and you can't cancel the flight and need to take 2 weeks before you start your new job. That would give you a full month, if necessary. I think it's quite common to ask for 2 weeks before you start a new job, and I think it may be necessary if you're going to Germany for treatment.... I'm assuming this is hyperthermia treatment?

Disability is very difficult to get. At least in my state of Massachusetts. I applied for disability, and they didn't even respond for 6 months. I doubt it would be a quick and easy process.

My opinion is that your health always comes first, and your job comes second. If you're not healthy, then you can't do your job. Simple as that. I'd take the opportunity to try to get healthy with the Germany treatment.