I have gone through your complaints.
As you are saying You are diagnosed with PCOS
and having regular periods, and now no periods since 2 months and on 5 days mepate and past 6 days sice last drug taken .nothing to worry.usually withdrawl bleed wil be seen in 5 days sometimes in some people it may take 5-10 days .to think of pregnacy few early pregnancy
simptoms if are there like early morning nausea
and breast tendreness.if they are there go for urine pregnancy strip test at home.if no symptoms or udine pregnancy test negative consult the Dr for ultrasonogram.it may be helpful.