97 Ranger ? after gettin rearended

Ok so my Ford ranger has a weird issue going on. I was rearended at like 25 mph. It bent my bumper a little bit besides giving me and my girl whiplash. My question is this... ever since I was rearended my turn signals choose to work when they want.. my right front and rear work 60% of the time... the driver side the side the woman ran into is a different sotry... the front drivers blinker blinks hella fast the rear not at all.. on the dash it blinks fast also.. the bulbs are all good on all four corners... the passenger side blinks hella fast every so foten but sometimes slow so the front and rear passenger side work... any ideas?

sounds like the grounds is broken or getting intermittent contact, id start in the rear where you were hit & check all the connections running to the frame