i did the same thing to my MCL from a stupid heel hook move on PLASTIC ...goddammit it sucks!!
Have you seen a doc? Mine was determined to be on the low side of a Grade 2...basically some tears but no "separation"...her comments to me (and so far they have been on) was to leave it alone for 1/2 a month, then use it to the point of "discomfort" and it should be back to about 75% of normal by 6 weeks, but that i would continue to "notice" it for up to a year, by which time it should be completely healed up...
so far, the f-ing thing doesn't hurt but feels weird! it gives out on me at unexpected times, but if i concentrate on it, i can push it full force...really weird!
The other thing, the middle of the night, around 1 to 2 am in the morning the frickin' thing is on fire...really smarts then...also, stiffer than anything in the morning, but by 10 or so, all is good...
you need to see an ortho to ascertain the level of damage...