What Causes Pain Between Breasts And Shoulder Blades?

2 weeks ago I had a sinus infection and an ear infection, then I hurt my back getting out of the shower, the chiropractor adjusted my back and I was fine, then I started getting light headed and nauseated, went back to chiro and he adjusted my neck and that went away. today I woke up with pain between my breasts and in my back between my shoulder blades...I know I am 60 years old but this is getting to be a little much. never mind