URGENT HELP !!! ( pregnancy scare )

On oct 24 2019? I had protected sex with condoms , also took take action ( plan b). Next day. Two weeks later I got my period 4 days. Now it’s been couple of weeks, and I’ve been feeling so many pregnant symptoms idk how to feel. Could it be the plan b messing up my system? Hormones messed up? My cycle got all twisted? My period is suppose to come next week but I’m afraid it might not come for some reason. ( my discharge has been also very strange and diff )