A lymph node swollen for no reason about 1.25 cm very soft and moveable under jaw and is palpable. is this normal since its under 2cm? it never grew.

Evaluate: Although that lymph node enlargement could be normal from an infection, i would recommend evaluation by a healthcare provider for further recommendations, regardless of lymph node size.

Monitoring Centers: Lymphatic system absorbs/carries things too big to go into the arteries/veins like bacteria eaten by white cells/digested food. Lymph nodes "taste" the lymph everywhere for bad stuff like bacteria/viruses/cancers, etc. When it detects a problem, it alerts the immune system and your body reacts. They enlarge in response to the inflammation they create when they react. They shrink when all is well.