Should I take a plan b ? After anal sex.

Andi
I took one for the damn team and tried anal, we used lube it was a little unconfortable buttttt (punny) it's stopped hurting but it was enough for him to tell me he appreciated and all that nice stuff. This is where things messed up. We didn't use a condom. He came inside me. Well my anus. And then I sat there to let it allll come out. I laid on my back and he came while I was on my back. So no way it can drip to my vagina. We cleaned down. And then I got up to clean, rinsed and bathed. Still up not cleaning in ward. And then we continued to have sex regular vaginal sex with condoms but after when I was putting my underwear on it was drenched. Now i dont know if it's wet from it coming out of my anus or I was really horny and I made them wet. . That's what's worrying me. Should I just take it. They're not cheap that's why I want to make sure.