could these be early pregnancy symptoms ?

okay so i’m on the ring & a few weeks ago i was on my off week where i took it out for a week, except i accidentally left it out a day late & me & my boyfriend had sex the day i was supposed to put it back in. I took a plan b, but now for the past week my hormones have been crazy (i’ve been crying about the dumbest stuff) , i’ve been feeling nauseous, getting cramps & bloating to the point where i thought i was getting on my period. but i’m not supposed to get it for 2 weeks. idk if this is just me being paranoid or maybe the plan b is messing up , but is it possible for me to have pregnancy symptoms this early?