I need help (trigger warning; sexual assault)

On the evening of the 13th, I’m pretty positive I was raped. I’d invited someone who I thought I knew...and we’d been drinking and I blacked out in my room. I remember flashes of him in my room and doing things to me but in all honesty when I woke up the next morning I thought maybe I was just dreaming. And he was already gone.

But I woke up extremely hungover and sore down there. I was too hungover to even move from my bed so I stayed in all day. The next day on the 15th, I went to the store to get a plan b/my choice tablet to take just in case. I also noticed tears and abrasions around my vagina and my anus. It’s been really painful to use the bathroom.

I’d been noticing white discharge throughout the week and yesterday I noticed reddish tint. But my next period isn’t until the first week of October...But when I woke up this morning, I was bleeding and leaking through my shorts.

Is it possible to start my period one week after taking the plan b pill, and one week before my actual period?

I feel like I don’t know my body at all. I don’t know who I can talk to about this. I just want to make sure I’m not pregnant, that this isn’t implantation bleeding. But I was reading online that implantation bleeding is more pinkish-brown and not crimson red...I’ll attach a few pictures...

But I’ve been feeling different emotions and anxieties and honestly, I just want to crawl under a rock and cry.