By the symptoms you describe I would dare to say you suffer from "tennis elbow". I mean, I also was there. I went to a good PT, please, if you need more than one session to get rid of the pain, it is not a good PT and they are just trying to get your money; I was at the point that one week more and it could have been chronic, so I know what I am talking about.
After your session with the PT just start lifting weights again but more carefully. You will feel weaker regarding to press exercises, and of course any bi or tris exercises. So just keep working out acording to your elbow sensations. I would skip isolated arm exercises for a month or so, pressing and pulling will be enough for start recovering from your "tennis elbow"; but it also depends on how you feel. I would also buy a softball or tennis ball and read the "The triggerpoint therapy workbook - by Clair Davies".
And of course, a good supplement support such as OMEGA 3 would be beneficial. I buy one from AMAZON - Kirkland Signature because it is the best I have around, although if you want to spend money on a quality one, here there is this website: labdoor.com/rankings/fish-oil . They Rank all supplements and have interesting articles. Anybody could answer me, what is the omega 3 EPA and DHA content in the Krill-TS supplement from N2BM? I mean, it says 1000mg of Krill Oil with O3,O6 and O9, but I want to know the O3 composition. Thanks