Stripped oil pan threads -__-

[JordaanDMC-12]

So I was changing on the oil on my 91 300E and everything was going the same as always but when I went to tighten the drain plug back up, it got to a certain point and went loose again and I automatically knew what just happened, I pulled the drain plug back out and the threads were still on the plug.

I am less than two weeks away from needing to drive this car back to California, I can't afford atm to drop 200$ on a new oil pan, is there any fix I can do that will just last me 1,200 miles. As soon as I get back to California I will be able to get a new pan but not before this trip. Can I buy a the next size plug and tap threads into it? Rethreading plug? ugh....fml