Pain radiating down leg when sitting

I can't do adduction or abduction exercises because the pain radiates down my leg on the side I am working.  This avoidance may have weakened muscles which have contributed to the problem.

Since losing my weight I have found sitting for over an hour, even on the padded seat of my car, causes the same radiating pain.  I now have no butt, hence no padding.

I have questions:

• Has anyone else experienced pain while sitting, which radiates down the outer thigh?
• If so, did a butt enhancement where fat from another part of the body is injected into the buttock area alleviate the problem?
• If you have this problem and a flat butt, what has worked for you?

Thank you in advance for your help.

I had/have that issue except I would be concerned about the radiating pain. I had radiating pain down my legs and needed 2 back surgeries to fix a compressed nerve. 

The pain got better 3-4 yrs after surgery. 

I did have some butt augmentation and I can't say it helped all that much. 

Thank you for the feedback.  

I appreciate it.

Are you able to see a physical therapist or an orthopedist?  

Just started seeing a physiotherapist.  Sounds hopeful