Chest pain


Just a medical question. Ever since I’ve had strep throat last winter I’ve been having chest pain that comes and goes. Like when I had strep it hurt, like when pressing down on it, and it felt like it needed to “pop”, so I would stretch my chest out and there would be a small pop, and it was help a little. Then I was treated for strep and when that went away the chest pain did as well, but the pain has come and gone again twice. And I nanny and it’s hurting to lift up a 2 year old over my head and uncomfortable when I lay down on my stomach. I am thinking about getting to the doctor this weekend if I can, but does anyone know what this could be??