HELP PLEASE read

Elle

So here’s the thing im 20 yrs old and I started taking birth control (lo Loestrin fe) the first day of my period (April 6th-April 12th) for the first time ever after seven days of taking it my period ended however I had some spotting due to the birth control and on the seventh day I had sexual intercourse, my boyfriend came inside me when we had sexual intercourse, is there a possibility of me being pregnant even though I started taking birth control at the first day of my period? I have been taking it everyday now for 3 weeks Im not sure when i would’ve ovulated if i started raking bc April 6th. My period is supposed to start in 2 days I’ve been feeling a bit nauseous and my breasts have been tender, however according to a nurse practitioner this could also be from the bc because its my first full month taking it.