Is it bad if i can feel a lympy node in upper left groin, it's about the size of a pea, doesn't hurt, and no visible swelling, and moves around easily?

If it is truly : Lymph node, less than 1 cm, not enlarging, and not painful or tender, you should not worry. But how can you be sure it is a lymph node? Sometimes doctors can't tell for sure. Show it to a doctor once just to make sure.

Not so bad: If you're thin or athletic build, it's not uncommon to feel a small lymph node in your groins, perhaps several. Now , if this continues to enlarge, yet remains painless, it should be evaluated. I suspect this is not much to be concerned about. Do not manipulate is several times a day. Just check it every 3-4 days . Good luck.

Monitoring Centers: Lymphatic system absorbs/carries things too big to go into the arteries/veins like bacteria eaten by white cells and digested food. Lymph nodes "taste" the lymph for anything bad 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.