I just recently switched from alesse to blisovi 24 birth control (prior to the alesse I was on reclipsen). I took the third of four placebo pills last night, but I still haven't gotten a period yet. When switching from reclipsen to alesse my periods still came, albeit the first month came a day later than normal. I usually start the morning after taking the second placebo pill, third at the latest (so basically my period should have started by now). Is this normal when switching to a 24 hormone pill? I did have unprotected sex around day 11 of this pill, but I haven't missed a pill nor had any other symptoms. In fact, I've had my typical period symptoms (lower backache, mild cramps), just no bleeding yet. Trying to figure out if this is normal or if there's a chance I could be pregnant.