I can definatly relate Kaia!
Have you tried icing it, anti inflammatories? anything?
I hope you haven't done anything permanent but you may have just aggravated or inflamed it.
Your body has been thru alot in four years and the healthy parts are probably trying to protect the hurting parts. You will have to amke the concious decision to take care of yourself and bend at the knees and keep that back straight! You don't want surgery nymber 6, right? Ouch!
I am praying for you today!!