Hardened lump in left cheek after Buccal fat removal, will massaging help?

I had surgery last Wednesday and have experienced swelling as well as a hardened lump of what I assume to be fluid in my left cheek. My doctor told me to massage it, with increasing pressure as time passes, and that it should start to go down in a few weeks (with the rest of the swelling). Is this something that would require drainage, or is massaging adequate to eliminate the hard lump?