3 questions: Lying on my stomach for massages, concerns for mammogram and shoot pains in breasts. 1 year post-op.

1. I got the breast aug done a year ago. I would really like to get full body massage but haven't had the courage to do so. Is it safe to lie on my stomach without damaging anything? 2. Same concern for getting my annual mammogram. Can implants (300cc in my case) withstand the squeeze of the procedure? 3. I am fully healed and at times even forget I have implants but even a little shooting or throbbing pain in one of my breasts makes me nervous at times. Am I being paranoid? Thanks in advance.