my periods were due on the 24th dec i'm 2 days late...and still no signs of getting it.. neither i am experiencing any pregnancy symptoms(the chances are very slim coz me and my husband used protection and i'm on the pill also coz we aren't ready yet).. i had developed serious cough and congestion for which i had to take antibiotics.. i'm cured of the cold now but now struck with ameobiasis and on medication for 3 days.. is this responsible for delayed peiods or it might be something else? thank u.