Hello Dawn,
It is very possible that you have a swollen gland on the left side of our leg and groin areas as there are glands there. You have lymph nodes in that region and they are there cleanse lymphatic fluids of pathogens. If you have a lower intestinal infection (colon) chances are the lymph nodes in that region are cleaning that up for you. The same think happens in the neck region you have have an infection. Your lymph nodes there swell up because you are making more white blood cells to take out the infection. You have cells then you did before so the area expands pushing outward making for lumpy areas on your skin. Sounds like you'll be okay for now but if it doesn't go away soon you may need to take an antibiotic to help your system out.