Yep.
You need an MRI to determine if the pec is torn off the tendon, even partially. This will help you determine whether you should get surgery. If it's covered or you can afford it, do it. Look into someone who has done this type of surgery before do see if they can cosmetically fix any damage.
Don't get an X-Ray, it's useless.
Get the surgery about 10 days from now if you need it.