My successful cycle was 75mg Clomid CD 5-9 coupled with pregnyl, can't remember the dose BUT I would really caution AGAINST using left over medication and self-dosing. I know, you did it the first time without any drama but using a different drug and 'guessing' your medication dose is a really bad idea IMO. They offer blood tests and scans for a reason... Plus using left over drugs, well they would be 6+ years old so personally I wouldn't use them as medication have use by dates as well...

Also I can see from your sig that you have just suffered a loss. I'm very sorry for that. Although unless you were on clomid/puregon in that time it shows that there probably isn't a HUGE issue ovulation, despite the PCOS, so be really careful with it all as you don't want to have hyperstimulation.