A couple months ago i pushed myself up from my bed where my hands were behind me almost in a dip ex position. I felt a pulling pain from where my sternum connects to my rib cage. I then went to the gym and when i got to the dip bars the same pain was encountered. I didn't feel it during bench presses but later on in the future trying push ups without pain was unsuccessful.
It's been 3 months and i haven't done anything heavy but tried push ups the other day. The only problem that i can think i'm going through is costochondritis. What are some exercises i can do for this?