So Last Thursday I had sex and my partner had came in me so that night I took a plan B ( note it was my first time taking plan B ) also i had already started my period before that day so these past days I’ve been feeling fatigued , my pee burns just a little , Ive been waking up in the middle of the night needing to urinate even when I wake up and throughout the day. So today I had been peeing brown and this was on my underwear I’m really nervous .. someone please help ( please no negativity I really don’t need it right now .. )