Traumatic wrist fractures can be very difficult fractures to heal from, it can take a long time for everything to return to normal, and sometimes you can be left with a few deficits in spite of your best efforts. At less than 3 months post surgery, you are in very early days - my hand therapist told me it takes a minimum of 6-8 months. My daughter had a traumatic wrist fracture followed by another 7 months later - it took her almost 3 years to reach 90% of her previous use/strength, and she still gets swelling with overuse.

From the description of "electricity" I would think it is your nerves healing from the trauma - that is a very slow process, and the sensation and location can change from day-to-day.

The stiffness is also part of the healing process, often accompanied by swelling and/or pain. It would be good to address this with your PT - there are many strategies they can teach you to help ease the pain -it is best to work with them to find what helps you the most. After wrist surgery (not a fracture) I found a hot paraffin bath was best before my exercises to get the blood flowing. I also relied heavily on NSAIDs to ease the pain, but nowadays I can only use Tylenol. Also massage was very helpful in loosening things.
Are you still seeing a hand therapist?