Hello, I Was Wondering What A Dull Ache In My

Hello, I was wondering what a dull ache in my right calf might be? I work in retail and work on my feet 8+ hours a day and tend to shift my weight to this leg as well. I am also on birth control (low dose) and am overweight (currently working on changing my eating habits as well as exercise) but have no swelling, redness, or pain, just a slight ache. I am fearing a DVT due to the research I read online. What should I do?