Whatsup people,
so I finally picked up a girl in the club and had a sex with her!

But I so much didn`t believe in my success that I start questioning myself, like "maybe, she is just a hoe" or "she does that with absolutely everyone like prostitutes". And if all this is true I have the other question killing me "what if she had some serious STDs

"
And I did use condom, but still I would never want to fuck a girl with STD even with condom,
and the other thing is she was on period and so the condom was in blood when i pulled it out
Now let me tell you the whole story: so she was sitting with her friends in balcony area of the club, she was smoking, I approached the girls using the way I always use, I didn`t change too much my approaching technique, just added some funny jokes which were related to the conversation. And I started to talk to that girl, I guess she was quite drunk by that time, although she was standing good

no, really, she didnt fall when she walked fast later. So after after a small conversation, we kissed a little bit, then she was going to leave with her friends, the club was about to close, I thought "fuck it, I`m gonna tell her straightly". I hugged her and said "so what about coming with me?" I guess I also said that I stopped at the hotel. Anyway, she said several times "Okay, listen, I cant fuck you today, I`m on period" I said " dont worry, I wont touch that" and then she was leaving and rushing with her friends to a car, I followed her, they stopped near the car waiting for another friend, we started kissing again, I said again "dont worry, I wont touch that", then she said they are going to some afterparty at some hotel, I went with her and her friends. We got to the hotel.
So we spent some time there, at the same time I was talking to her trying to take her with me to my hotel, most of time we were kissing, touching each other, I was lifting her, putting my hands into her pants

and etc
So probably after about 1-2 hours I was kind of tired and we were outside because she was smoking I said look I`m tired, I`m leaving and I called taxi, she said "ok, give me 5 mins I will say bye to my friends and come back, wait for me". So finally we went to my hotel. And we had a sex. And she really was on her period. And I was kind of anxious/afraid when I saw condom (it was Trojan btw) in blood, I said wtf, she said "I told you, I`m on period", that was first time I had a sex with a girl on a period and saw condom with blood on it. And you know, although I kind of check inside part of condom for blood, checked my penis skin for blood by tissues, still you know because of that freakin blood, I feel sometimes anxious when I think about it, like maybe when I was taking out the condom my penis tip could touch condom part.
So at the same time I was trying to find out what kind of girl she is, (she is 22 yrs btw) particularly digging her facebook account (she didnt give, I found it myself), to be honest everything she told me about herself was matching the information on fb. And there were even some pictures proving that she works at some school, proving her degree at some uni and etc.
Soo please dont laugh me, try to understand me, I`m just new to all these things, and dont have any elder friend here in USA to ask (I`m an alien).
Probably, if I didnt see blood on condom, I wouldnt think about it at all, but blood made anxious
So what do you think guys based on what I wrote here, was she like sluttiest slut/prostitute/hooker or she was just looking for one night stand?