There is no evidence to show what you experienced was anything more than a dream. Whereas other studies show verifiable data that the person could see what was happening on the operating table and events outside the hospital pointing out things he could not have known otherwise, but this is in transition to soul sleep. When people have visions of 3rd heaven they are witnessing future events because nobody is resurrected yet according to 1 Thess. 4.14-18.

"For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him. For this we say unto you by the word of the Lord, that we which are alive [and] remain unto the coming of the Lord shall not prevent them which are asleep. For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first: Then we which are alive [and] remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord. Wherefore comfort one another with these words" (1 Thess. 4.14-18).

Not even David a man after God's own heart is in heaven yet. "For David is not ascended into the heavens" (Acts 2.34).