Dime size lump on my knee just to the left of my patella on my t knee. it hurts when i stand, when it is bent, when it is pushed on, and when i kneel?

Let me try to help: Is this lump new or old? Did you have injury to the knee? If you do most likely it is bursitis in front of the knee cap? Normally that bursa is flat and can not feel it but when it injured have some fluids in it. Go and check it out. Good Luckt

Sounds like you may:: be having meniscal cyst, with or without a tear. An examination by an orthopod and MRI would be helpful to confirm and treatment started. Other possibilities of the reason of the swelling should become obvious with the above exam or the scan. Good Luck.

Get it checked: If you have a painful lump, then it needs checked. Cannot prognosticate with limited information available. See your Dr / Urgent Care or an Orthopedist for evaluation and diagnosis.