What Are The Side Effects Of Emergency Contraceptive Pills?

HELLO ,

I am 19 years old with no medical history whatsoever. I have been taking a birth control pill for about 3 yrs now and i recently took 1 month off from using it. I want to start back up taking it as soon as possible, but I have been reading online that sometimes it takes sometimes up to 3 months for your period to start back up.. does that mean i have to wait for my period to start to take my birth control ? OR can i start taking it whenever?



Thanks SO much !

- Chelsea