Can a pain in my collarbone be a type of tendonitis. had tendonitis in both wrists and pain in my collarbone/neck feels similar. had for 2 weeks now ?

Not likely : Tendons are structures that muscles connect that then allow them to move various bones. Because the collar bone does not really move, there are not really any major tendons that insert much on them and so tendinitis is not a real common cause of clavicle pain. There are ligaments, joint capsules and even joints themselves that can be abnormal and can cause pain. Exam will likely reveal cause.

Collarbone clavicle: Has a lot of motion. It moves and rotates while supporting your shoulder , Pain at the center the chet or the sternum and pain a t the there end near the shoulder can occur but it is joint pain or the result of injured ligaments typically not tendonitis, however tendonitis in the shoulder or rotator cuff is below the edge of the collar bone. The main thing you have multi sites of pain so gtchcked