BUZZING/VIBRATING @ 16w! Baby!?

Lindsay
Baby is that you? Today I am 16w and yesterday after I got home from work I was standing at my dresser and I felt a slight buzzing sensation. Kind of like pop fizzing. It lasted on and off for about 10-15 seconds. I called my OB and she said that seems early but it could be. I'm a FTM. What do you think?