Tweetlwgy,
IMHO, I'd just wait, cause like you say, the greatest amount of time that it would have been effective has passed.
I'm guessin your in your 20's so your natural GH has still not peaked and your natural system for repair and growth is in great shape.
If it is just the fact it feels tender, major some deep tissue massage and a little more time, worse thing too do is too really push it and re-injure, because then the probability for it to be a recurring lifetime issue is higher.
good luck