i just switched from seasonale to aviane, and am on the placebo pills(aviane) for the first time...its day 5 and still no period. ive had spotting, but no period. i bought a pregnancy test, and it was negative. then i called the doc and talked to her. she said it was normal to actual miss your period completely when switching to another pill, and told me that i had nothing to worry about... does this sound right to ya'll??