<s>[INST] Hello. I switched birth control pills. I went from Ortho Tri Cyclen to Minastrin 24 Fe. I switched in March, so my next period would come in early April, which it did but it started 3 days before the placebo began. Now it is May and the placebo for this month began 4 days ago, but I have yet to start my period. Could this be because my body is adjusting?? [/INST] hello...delay in periods can be due to stress,overweight,pcod,hormonal imbalance,thyroid problems,medicines etc..dont worry..wait for 7 days..you will get your periods... </s>