First of all congrats on the wee one that's about to enter your lives
That's wonderful. Pregnancy is such a wondrous time. so many changes--feeling the baby move, seeing the sonogram....
Along with all of those wondrous things are also a bushel of what ifs....
Yeah, technically preggo women have an increased chance of blod clots. But like hubby said, you'd know it, if you had one in your leg. The spot would be warm/hot, maybe swollen and definitely tender. It wouldn't be just random soreness or little jabs of pain.
Now what you can be feeling is just increasing weight of the babe pressing on nerves in your back. This in turn can cause pain in you legs. WHen I was pg with my son (I have 6 kids--oldest is adopted), around 30wks along, I would get this shocking pain down my outer left thigh when I walked. Sheesh it hurt. Eventually that section of skin went numb for the duration of the pregnancy. It was my son putting pressure on my sciatica nerve. Also, like you said, a lot of women get varicose veins during pg. That can and will cause pain in your legs. Sometimes it makes them feel heavy too. Some women have to wear the special pantyhose that support the leg during this time. Also they have to keep feet elevated to help with circulation. Another weird thing is moles and skintags start growing on a lot of women. Wow, got a new patch of brown on my leg when I was pg with my son too. So, yep, pg is great but can also bring along a lot of worries too.
Next time when you see the doc, mention your leg pain. When I had that shocking, my dr gave me a B-12 shot. I dunno maybe that could help you too.
Good luck and again congrats on the babe. when are you due????