Still a bump on my eyelid after chalazion removal. Will this go away? (Photo)

The nodule needs to be removed in entirety, otherwise, it will have residual and it can even get infected and become even larger. you need to return to your doctor and the nodule needs to be fully. if you don't like to have another procedure, the lesion can respond to  steroid injection as well. 

Chalazia excision is a standard approach to the inflammatory nodule in the eyelid that develops after a stye.  However, many of these respond dramatically to a kenalog injection without the necessity of a surgical procedure.  When residually material is left after a chalazia surgery, these also respond very nicely to kenalog.  I recommend this approach.

It could be swelling if you just had it removed.  If its been 3 months, you still have it and need it removed completely.  Your surgeon knows if it was done completely or not.

A chalazion that has been there for 3 months is considered chronic and a mature "wall" has formed around it. Whether or not the bump will go away depends on whether or not there was any maneuver during your surgery yesterday to scrape out the walls of the cyst. If an incision was made and simply allowed to drain, chances are it will fill back up again. If the walls were aggressively scraped so that the sac heals down, the bump will resolve once the swelling goes away (probably about a week). 

It is rather common to have a residual bump after chalazion surgery. If it has been three months, you should go back and ask about alternative options - like Kenalog injections - which might be an option for you. Warm compresses always help as well. Topical medications probably won't do anything for you at this point.