This is definitely something to follow up with your doctor about. Because children cannot be counted on to reproduce events at the times we want, it will be best if you can capture a video (either iPhone or small camera).
A friend of mine has a son who was acting out of the norm (her 3rd, so she was not an inexperienced mother) & the ER docs told her multiple times "oh you just startled him". On the 4th episode @ home, she didn't know what to do so she videoed, & when she brought him in they were able to diagnose from the video that he was having seizures. It helped determine testing to do from there for diagnosis.
Since seizures can be mild to serious, I would suggest scheduling an appointment as soon as you can, & getting video. If you can't get in right away, ask if you can email a copy of the video. That way, if it is serious, your doctor can either squeeze you in, or refer you right away to a specialist.
Don't panic, I know this information is scary, but better that you be informed & move forward to make sure that either it's nothing to be concerned with, or help to get it diagnosed & treated, than not know & do nothing & have your daughter end up with complications that could have been prevented.
Best of luck in this. T.