New Swing- New Pains

[muttbag]

I'm recovering from a lower back injury due to a car accident where I was hit from behind (chuckles accepted).  I've been able to maintain a fairly consistent routine of P90X and jogging every other day after a few chiropractic adjustments.  In the last 6 months, I've completely torn my swing down and rebuilt it with the help of a very good friend who is also a very good golfer.  On top of this, I've discovered 'left arm straight' in the last couple of weeks and have been at the range or on the course between 4 - 5 days a week since.

I received a bad tip (from someone else) to keep my left leg completely straight (no knee bend in the takeback) and this resulted in a lot of upper body torque that put unnecessary stress on my left shoulder.  I've been recovering from that pull for a few weeks, but now I notice that my back left 'flank' (left side, from middle of back to top of shoulder) is really feeling tweaked.  No doubt I am using these muscles in a way they have not been used before, but something feels off.

I'm spacing my range and course outings to every other day.  I played through the pain last night and got 9 in, but I'm trying to listen to my body.  As of now, it's telling me that I'm overdoing it.

Any advice on how to remedy this?