Well look -- your physical health isn't that great. You DO have some things wrong. You would NOT be considered a "quitter" if you gave it up because of PAIN!!! Anyone would understand that! And ANYONE would do the same thing!
Right now you don't feel so bad because you had the epidural -- but just wait until that wears OFF -- you're gonna feel like HE@#.
And since it's hard for you to get to practice - maybe it's just time to stop cause you're going to be doing your body some damage if you keep this up. Listen to your body. Usually it tells you when it's time to stop.

God bless. Hugs, Lee