Vibrating from Tuning Forks

My Husband and I started using Tuning forks. Within a few minutes of him using the Tuning Fork on me it felt like my stomach (above belly button) was being sucked in. It felt really good until I panicked and my heart started racing and I made him stop. Then I started laughing hysterically. He then noticed that his toe turned BRIGHT white. We don't know what happened to cause that or the fact that we were both VIBRATING. We literally Vibrated for 5 days. He loved the whole vibrating experience and didn't care for it since I suffer from Anxiety and didn't know what was going on or why. Has this happened to anybody else and what could have caused this? My husband wants the vibration back, I'm not so sure for me. Any info would be great. Thanks