With vyvanse it is possible to have had a rush feeling. It is a stimulant. Being on birth control created peaks and troughs in hormones which can cause weird feelings. Since you didnt mention Andy head trauma, and it did subside I would watch it and see if it happens again. If it does I would go to the ER and be evaluated immediately to rule out anything concerning.

It is hard to pinpoint the exact cause of your symptoms without a full history and physical. From the limited information given, your symptoms sounds like near syncope, which may be due to medication or dehydration. Certain infections will also cause similar symptoms as would seizures. I would recommend a visit to your primary care provider for initial evaluation.

Michael J. Olek, DO