shifting symptoms

aight so, i tried it like a week ago, i was sitting, at that moment i felt so relaxed that i thought it would be a good idea to try it, i closed my eyes and began to visualize myself as best i could in my dr, i felt my legs tingling, i began to see a very strong light and i felt a little dizzy, i felt i was about to do it until i heard my dogs barking, which broke my concentration and made me open my eyes.