i'm sorry to read you had unexpected complications from your surgery. Which knee is it, by the way?
Did your surgeon send any samples of the drainage fluid to be tested for infection when you had the Incision and Drainage? I hope he/she did and they came back Negative. I'm glad the tibial bone biopsy was negative.
Were you treated with any antibiotics?
Your knee has been through a lot, with the two surgeries and it will need time and gentle treatment now, so it can heal.
I completely agree with your surgeon's advice not to go to PT. Your knee will get all the exercise it needs , just with your daily activities of living.
It's not exercising that gets you your Range of Motion (ROM) - it's time. Time to recover, time for swelling and pain to settle, and time to heal. Your knee has the potential to achieve good ROM right from the start, but it's currently prevented from doing so by swelling and pain. ROM and strength will come, as your knee heals.
Make sure that you ice and elevate your knee, to help with swelling and pain. There are articles about those in the recovery guidelines that I'll give you.
The zingers are little electric shocks from cut nerve endings. After two surgeries, those nerves will be trying hard to reconnect, or grow new pathways.
Pain at night is often caused by two things: over-activity during the daytime, and under-medication.
So, make sure that you aren't trying to do too much. You can check that against the article on Activity Progression. Count your second surgery as the start of your recovery, not your original surgery. Secondly, make sure that you're taking adequate pain medication, on a regular schedule.