Chest pain that started during my soccer game...?

so i had a soccer game this past sunday and in the middle of the first half, i felt a pain in the right side of my chest right under my pectoral muscle. don't know what caused it but i'm thinking it was from a heavy challenge on me from an opposing player. during the 2nd half, there was still a small pain, but nothing really major. later that day, i felt like i had a bruised rib or something, but there was no discoloration. i asked a friend and he said maybe i pulled a chest muscle but i'm unsure how bad it is. there's a pretty minor pain when i take a deep breath and when i tried doing an ab workout just before typing this that required me to lay on the floor and the pain was just a little too much to bare, so i stopped. like i said, there's only a minor pain when i take a deep breath, a short, minor pain when i bend forward, and pain that causes me to cautiously and slowly lay on my back when i go to bed. how long does an aggravated or pulled chest muscle take to heal in my case? anyone have this experience?