I need help :-(

I’m 18 years old and I lost my virginity last weekend. My virginity was always something I was proud of not just giving away to anybody so when I lost it to a boy I barely knew I was kind of devastated. But I have noticed that my vagina has been a bit itchy, more just a one scratch and done kind of thing. And I’m scared I might have caught something from him. Is itching normal after losing your virginity? We didn’t use protection either so that makes it just much worse. And also a couple days after when I had went to use the restroom and I wiped there was a spot of blood. Every now and than I’ll see little spots of blood, what could this mean???