SOS help!

Me and my boyfriend did oral, and i ended my period just yesterday. I was super sensitive and it took a really long time for me to get off but i was horny. But i was super sensitive, and when I finally came, there was blood everywhere. My stomach hurts but not like cramps. Every time i pee i bleed but it doesn’t burn or anything its like im normally peeing and Im shitting a lot. Now it feels like i have to throw up a little and i just don’t know. Im not pregnant, i just ended my period. I was super duper light yesterday so im not sure if i’m just having the rest of my period or not. The period blood is either really light pink, dark (old blood I’ve seen it before) or new. I heard this could be a UTI or my vagina is severely irritated on the inside. Like ill have a little drop of blood if im not peeing but sometimes if i pee i wont bleed if that makes sense idk im just kind of worried this never happened before.

UPDATE

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I was plucking an ingrown hair (Gross ik) but like, i had to press on my stomach a little and some blood came out. It stopped after that. I wiped and i was okay. Im itchy down there but i shaved yesterday so its kind of normal. Now my stomach hurts just a lil