Hello ,I have been doing some heavy lifting at work,after a couple of days I felt my right knee when kneeling on it was painfull & swollen with fluid just below the knee cap have been takin ibuprofen & paracetamol for 2 day but my leg below the knee has swollen and is red ,seems to be infected,the knee is hot to touch the shin ,calf is also warm do you think it requires antibiotics,I am not in pain only when you kneel thank you