In those kinds of situations, where it's unclear if you're dealing with a medical emergency, it's best to at the very least call Alert One. Alert One would be very quick to tell you if you need to call an ambulance or if you just need to monitor their condition. Best case scenario: the TM is cleared to be sent home with no further care needed and file made about the episode. You won't get in trouble for calling Alert One when you're dealing with a possible emergency.
Based on my experience, I would've had someone stay with the TM, a TL call 911, and myself as the LOD call Alert One. Someone going in and out of consciousness is way above my ability to treat and needs proper medical attention. Also you're not supposed to give fluids, food, or meds to someone with an unknown medical condition. You don't know if their ability to swallow is compromised and you don't know if their body can handle it. They may have an allergy that they can't tell you about.