Am I Falling Apart??

As you know I've been on the bench due to back problems.

Sunday whilst taking drugs my right shoulder went ouch (I note the right as it's my lower left side of my back that's been hurting). Shoulder was there but didn't stop me running. Got no worse and no better.

Monday I return to work. Back fine. Shoulder there (hurt when I turned to reverse by looking over right shoulder etc but otherwise fine).

Didn't run last night as life got in the way.

Went to bed. Whilst asleep I "became aware" of back as in I was still asleep but could feel that lower left region when I moved. I can pin point exactly where it hurts now. I did get an occasional tingle down the left leg but this could have been in my head I wouldn't like to say (you know the old "what's that?" syndrome when anything hurts!) Shoulder is also still sore, again I can point to where it hurts (well not on me but I could point to it on a picture!)

Now I mention the left/right thing because I am wondering what to do next.

Could I have twisted something (hence the oposite sides)?
Should I see the Dr again?
Suggest I see the physio?
Carry on taking drugs and wait awhile longer?
Run anyway?
Rest?

Very confused and in niggley pain but not chronic pain and wondering.

Help/advice really appreciated!