Hi I’m 37 female overweight to start. My left leg keeps getting pain. Hurts to stretch. Google tells me it’s a clot so I’m freaking out but trying to talk myself off the ledge. Stretching hurts. Walking hurts at first but then feels better. Any idea what that is and how to make it better ? It’s my calf to behind my knee one leg. Sorta radiates to my ankle and slightly to my upper leg