Thank you for your question.
From the symptoms you have described you might have injured your neck during the seizure
are result of affection of the nerve
. In your case the symptoms are getting worse. The best decision in this situation is rush to the ER.
I hope you have already received appropriate treatment by the time this question is answered. Also please be advised in case of emergency situations, always rush to the ER. The doctors are trying their best to answer your questions as quickly as they can but answering each and every question within minutes is not always possible. Next time on sudden worsening of symptoms like these please rush to the ER as early as possible.
Best wishes with you.