Discussion: Sounds like a real bummer. ...

Sounds like a real bummer. I hope you get it sorted out soon.

Thanks.
Can´t see what´s wrong either and causing this. Should be doing some exercises but pain and stiffness makes it hard go through it - and I don´t really think they help.
Oh well...

Maybe go see a doctor?

That´s been considered. I´ll wait and see...
Yesterday was OK again, this morning not so much?

Wild guess, but could blot clots be causing these intermittent symptoms? And become more serious?
Hmmm, a doctor might know?

Sorry, Bubo.You don’t say where the leg pain is - thigh, calf, both; outside, inside etc. Intermittent pain ranging from almost nothing to excessive sounds like it could be musculoskeletal or possibly a pinched nerve. Clots usually lead to lower extremity swelling in the affected leg and low-level, constant discomfort. You probably should see your doctor!

Mostly outside of thigh/hip but I´m feeling it in my calf sometimes.

My own guess would have been a nerve - it´s similar to the pain I had some years ago with my sciatica pain but it doesn´t feel like it´s connected to my back or above the hip as last time. Blod clots is another theory but it´s not feeling like you describe it.

My physio still thinks it is muscular after I told him about my thoughts.

The confusing thing is that it is quite OK every other day for no particular reason (that I can see). I´ve tried some NSAID:s which has worked fine yesterday and today but shouldn´t be a regular part of my "diet".

Probably a sciatica variant, ie, different location but similar nature; irritated nerve pain presenting in different locations & patterns depending on where in lower spine the irritation is.