Lump/ knot above nipple after chest workout

[stantonz71]

Worked chest tonight with dumbbells... Not super heavy. No pain or discomfort after or during lifting. Later tonight.. After sex lol there was a very noticble knot came up. I was exausted and breathing heavy(yes there is a point to telling this)it was very tender and swollen. After heartbeat came down its not as noticeable but still tender. It almost looks like a bruise. Think it's a tear or busted blood vessel from training?

 

[TONY83]

Without any imaging test there is no telling, i hope it is nothing major. Does it hurt upon touch?