I think I'm adopted I was born July 1st 1998 on my birth record it says date issued Sep 15 1998?

You state that the birth record was issued on 9-15-98. What date is in the box that states the date, hour and minute you were born? Perhaps the certificate was issued later. Could you please clarify this, before discussing the possible ramifications of being adopted? Have you asked any one else about this?