<s>[INST] Hi. I recently switch birth control from yaz to loestrin. I've never missed a pill and my period is like clockwork. I haven't had sex this month, but my period has not come on the regular day. My question is should I take my pill on the regular day as normal when I finish my pack or should I wait for  the first day of my period to start the new pack? [/INST] HIWell come to HCMOn either way you can follow the method like you can wait for the next menses or you can continue taking the pills as its but better to wait for the next period and take care for intercourse, it should not be happened, till the menses, hope this helps. </s>