My lower left leg was sore and achy for a brief while also (about 2 months ago). Only about a week, iirc.
I was a bit concerned, I think I even made a thread asking about symptoms of DVT etc. My endo was ok with it (they check for DVT signs in the blood, again iirc it's a specific liver enzyme that indicates it).
Just watch it for a bit, don't fret. Worry is known to cause its own medical problems.
I've heard that if you elevate your legs for 10-15 minutes prior to going to bed it helps alleviate discomfort and/or reduce the chance of DVT. Not much more than 15 mins, though. Can't remember for sure why, but still.
Otherwise, just relax. You're doing fine as per your endo.