Definitely try lacrosse ball on your forearm and bicep. Lean against the wall and roll it up and down the muscles. If you find a tender spot, longer there with pressure and roll slow back and forth over it. Then do forearm stretches.
after being serious in CrossFit for almost 3 years, I’ve realized most tendonitis is the result of muscles with knots in them. They pull on tendons connected to the joint and cause pain in a different place than the actual issue.
I had knee issues resolved pretty quickly by loosening triggered muscles in quads, and wrist pain caused by forearm.
I also second a PT. Doctors just say take nsaids and rest. PTs can know what’s causing the inflammation and how to stretch/release it. I hurt my shoulder 4 days before a competition to the point that I couldn’t lift an empty barbell past my waist without excruciating pain. I went to the PT that afternoon. He did trigger point work, stretching, and dry needling with electricity to stimulate blood flow and the next day I was 100% again. It was then, and only then, I realized how serious football players can come out injured and return the next week or in some cases in the game. It’s toughness, but it’s also physical therapist treatment.