Do it ASAP
yes, you will need the medical form with I-485, so do it ASAP to save your time. Call the doctor to make an appointment, the list is on the uscis website. you do not need to print out any form, the doctors will have everything ready.
F-1 married to USC
Received Date 11/03/05
Notice Date 11/10/05
Last Update Date 11/28/05
AP online 1/11/06 (day 61)
AP in mail 1/13/06 (day 63)
FP letter 1/18/06
FP code 2,3 done 1/24/06 by walking in
EAD approved 1/31/06
Interview 4/24/06 (day 172)
Approved!!!!!! 4/25/06 (day 173)