Hello and thank you for your question.
yes it is possible that your baby had a seizures. Though febrile seizures are common in infants but they can also have seizures without fever.
The common sign of a seizure is jerking and eyes rolling back or starry spells. Moreover you have mentioned that baby was tired and fell asleep right after this activity. This is also a common sign of after seizure activity.
I would suggest to see the pediatric neurologist who can order EEG or 24 hour video EEG to evaluate further.
Please get back to me if you have any further questions. Thank you.
You're welcome. No it is not likely due to pain. But when one is in stress it can certainly trigger so pain can be an indirect trigger to this seizure.
You're welcome. I wish you the best.
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