Bad grades in high school?

i am planning on going into DEP for the air force. i told my recruiter that i used to take meds for ADD about two years ago. he now wants to see my transcripts from high school. i am currently a senior and my grades have been absolutely horrible these past 4 years. what should i do? should i just go to another recruiter and not tell him about the ADD and the meds i took? HELP!