I had a microdiscectomy surgery in my back after 4 days I notice a lump near or at the incision (wound)what does that mean? Also it’s still hurting me.

Please repost. Please repost and include the answer to your question given to you by the surgeon who actually did the procedure; or, if you have not asked the surgeon, please state why not.
Lump. You should call your surgeon so he can see the incision to make sure healing well. Could be normal but could be infection or excessive bleeding. I’m sure he/she would want to see it.