Hi Dr. Good Morning. I Have Undergone Angio Plasty And

Hi Dr. Good morning. I have undergone angio plasty and stenting abt 5 yrs back. I have shoulder pain, neck pain at times and I take massage. During the massage when the therapist (lady) runs her finger all over I get erection and fluid gets ejected automatically though it is not the intention of both. I get embarrassed though the therapist says, it is normal, not to worry. Is it normal.