You should talk to an experienced medical malpractice lawyer near you. There may be extensions to the time period for the discovery issues you mention. Don't delay. Call someone now-most attorneys will give a free consultation.
"Time limits" are generally governed by laws called "statutes of limitations." Each state specifies a different statute of limitations for different kinds of claims. In some states, claims for medical negligence must be brought within a year of the injury.
Additionally, different circumstances cause the time period to begin running sooner or later than in other types of cases. As a general rule, these issues can be factually complex and legally complicated, and it is in your best interest to proceed without delay.
Because of your specific circumstances, you should contact an Ohio lawyer directly and speak with him or her about your case. That is the only way you can know for sure if you still have time to file a claim to protect your rights. Most medical malpractice attorneys offer free consultations, and can discuss your options with you. My advice is to find someone you feel comfortable with and contact them directly. Good luck!
Sign up to receive a 3-part series of useful information and advice about personal injury law.