<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello, I am 15 weeks pregnant. About two weeks ago I noticed a golf ball size or little smaller lumpknot on my shin under knee . It had fever on it for few days. And now I also have swollen. Feet, ankles, and its painful. The knot feels like a bone hard. What could this be?  <response>: Hello and welcome to Chat Doctor, A lump on the shin associated with fever, swollen feet and painful ankles suggest infection. I am of the opinion that there is some kind of infection inflammation in the veins of the lower limbs. Pregnancy predisposes to clotting in lower limb and there is increased probability of infection of the blood vessels called thrombophelebitis. I suggest you to consult your gynecologist first and then your surgeon for clinical assessment and then management. Thanks and take care Chat Doctor. 