Middle and Ring fingers bad sprain??

Hi Dr 8a, and anyone with advice I was trying an overhanging boulder problem and pulling hard (mostly with my middle and ring finger) on a weird gaston-like/sideways crimp sicklemoon shaped hold. I felt a sudden very sharp pain shooting from my middle and ring fingers up my forearm.  I immediately stopped climbing, and iced my hand. I plan on resting a couple of weeks, but am not sure of the severity of the injury or if there is anything else I can do to speed up the recovery process? (I have a 5 month climbing trip planned...starting in July!) I feel pain when straightening my fingers, I cant make a fist, and it hurts if I press my hand, particularly where those fingers join the palm.  Very basic everyday actions also hurt. Any help/advice would be appreciated! Thanks, Catherine