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I am very much concerned with your problem and certainly will guide you how to get rid of these.
In my view
As per your story you are not using contraception
in true sense.
You have used contraceptive
pills to satisfy yourself.
I suggest you to
Wait 12 days after your expected period date if there is no period than do pregnancy
test of urine and if you are pregnant than decide accordingly.
Dr Bandil K K