Get a massage. It'll help.
Tell me how the yoga was. I've been dying to try Bikram.
There's many yoga places in Lakewood (where I live).
The fact that you did hot yoga, the same day you lifted -- Not a good thing. Besides the dehydration that Bikram brings, you also had your muscles extremely loose, more prone to injury.
Next time, separate the days between hot yoga and lifting.
Not the trainer aspect, that's my medical massage therapist aspect.
Take care of yourself!
You probably need icing 15 mins on/15 mins off.