Good morning. I am a 40 year old female. Four days ago I notified a very small lump on or in my vein on top of left foot. The pain was unbelievably intense. Hurt very badly to walk or touch had times of throbbing pain. This went on for 2-3 days then a large knot or lump appeared in same place. Also the first days my entire foot was inflamed. Then the last few days larger lump still there but pain & swelling a lot better.