PLEASE HELLPP

hello! i cant sleep at night i am really worried. will plan b still work while im on my green days? i had unprotected sex while im on the last days of my period but i took plan b right after and it made my period stop. two weeks later i had unprotected sex again and i took another plan b. but it was on the last two days of my green days according to the app. but ive been feeling symptoms like; nausea, lower back pain, sensitive nipples, bloating, peeing a lot, and like my lower abdomen feels like its movingor grumbling. is this the plan b working? or have anyone experienced this before and gotten pregnant. the last time i took plan b was two weeks ago. please help ladies! i cant take a test till another week coz it seems a bit early to test.