I STARTED A NEW PILL AND THIS IS MY 2ND MONTH BUT I HAVE BLED TWICE WHILST TAKING MY PILL ITS NLY A LITTLE AND ITS NLY WHEN ME AND MY BOYFRIEND HAVE HAD SEX AND WE HAVE HAD SEX OTHER TIMES AND ITS FINE ?? COULD IT BE CISTITUS?? I HAD A SMEAR 2 MONTHS AGO AND IT WAS ALL CLEAR?