Typically, would a person w/calf dvt walk w/o pain? i have no redness or warmth. only feel twitching in calf that at times feels uncomfortable. cause?

Difficult to say: Doesnt sound typical of DVT but hard to say without examining. Here is some general information on DVT and common symptoms: https://patient.info/health/deep-vein-thrombosis-leaflet Safest approach with this potentially serious condition is to be examined urgently by a doctor who is licensed in your area/country so this can be rapidly excluded.

DVT: Yes you could have an asymptomatic DVT but there are other reasons like trauma, pulled muscle, or a DVT.