Okla. Stat. tit. 63 § 1-738.3i
An action pursuant to this act shall be brought within two (2) years of the date the woman upon whom an abortion has been performed in negligent violation of Section 1-738.2, 1-738.3d, 1-738.8, 1-740.2 or 1-740.4b of Title 63 of the Oklahoma Statutes, or the parent or legal guardian of the woman if she is an unemancipated minor, as defined in Section 1-740.1 of Title 63 of the Oklahoma Statutes, knew or reasonably should have known of any information not provided by the defendant in negligent violation of Section 1-738.2, 1-738.3d, 1-738.8, 1-740.2 or 1-740.4b of Title 63 of the Oklahoma Statutes. If any defendant disputes whether the action was brought within the time specified in this section, the question of whether the action was brought within the time specified in this section shall be determined by the trier of fact by the greater weight of the evidence.
Okla. Stat. tit. 63, § 1-738.3i