I'm happy to report the plug has resolved itself without needing to see a dr:-)
I took a total of four ounces of raw vinegar over two days, used hot compresses before nursing, and pumped twice. I also massaged it in the shower once (wish I got more showers - lol!!!) and drank about 40 ounces of water.
It began to clear late on the night I originally posted. I would nurse on that side until she got tired of not getting any milk, poor baby, then switch. I felt it starting to let down a few minutes later, so switched breasts again, and the milk began to flow!
by the next night, all was back to normal. What a scare though! I only had one small clog in the beginning, and thought those worries were over at almost a year into bf'ing...I am sure that I was getting dehydrated. It has been SO cold around here lately and the furnace is running constantly drying everything out...& I didn't drink as much as ususal the day before.
Anyway, I am back to normal, and making sure I'm getting enough fluids - mostly water.
Speaking of water, dd, almost a year old, drank some from a plastic cup as I held it for her last night:-) What fun!
Thanks for your help, I really appreciate it!!