... my birth control Sunday after my period ended the week of. I've only taken it twice and I had unprotected sex with my boyfriend on the second day. This is the second time im using birth control pill (lessina) after the 2 months that I've used it first before. If there are side effects what are they and if I continue to finish my pack for this month? Should i? I dont think I should take emergency contraception while on birth control but I'm afraid I've made a mistake I'd really appreciate the help. Thank you