Dej!
I agree with what Lady said, and my neurologist said the same thing himself. Even though my MRI was much, much improved since the previous, and I had stopped Copaxone 3 months earlier, he said 'You still have the drug in your body for months after'. Shared Solutions even recommended me a drug holiday, so no I don't believe it's a result of the drug holiday.
Does sound like the hug, and a painful one at that. I went through a period (pre-diagnosis too, go figure!) where I actually had ultrasounds done because I had such pain in my right side under my rib. Everything checked out and my chiro worked on the muscle in that area, and it calmed down. I think stress caused mine.