what is going on??? can I see early pregnancy results THAT quickly!?

I am currently freaking out at 4:40 in the morning. 

Me and my boyfriend, of about to be a year, had sex last night. I'm on the pill, have been for years, and Sunday is when I took the first sugar pill for this month… now, in the past I normally don't start until on Tuesday the earliest, most of the time not until Wednesday and occasionally I've had it start on Thursday. Well, yesterday me and my boyfriend had the house to ourselves (which we haven't had it that way in about 6-8 months cause I live with my mom) and we had sex, good sex at that. (I'm not the most 'sexually attractive' woman out there, I have to be in the mood pretty much or else I just can't get myself turned on enough to satisfy my man😐) so we had sex and as soon as I started to orgasm I guess my boyfriend didn't want to stop to be able to satisfy me (which I wish he would NOT do that, I would rather him pull out and go on my breasts than go inside me, but he seems to not listen 100% to me when it comes to that. He listens to me about other things, he's a pretty great boyfriend at times, but when it comes to sex he seems to be a little selfish and wants to make sure he ejaculates and 'gets off', whether I would want it inside me or not) 

So we had sex, and he obviously he ejaculated inside of me. 🙄😳😰 so when we were done, I had been in the mood but instantly when we were done I was shocked, mortified, nervous, and scared because he had gone inside of me. I went to the bathroom right after, when I wiped there was a little bit of blood, but not much AT ALL, I truly don't know if it was period blood (didn't look like period blood though) or just blood from us not having that kind of sex in several weeks. 

Well last night when I changed my tampon (because i thought I had started so I put one in) it was white. No blood at all. My boyfriend of course was telling me I was fine, it doesn't happen that fast blah, blah, blah so I kind of just brushed it off last night, stuck a new tampon in hoping when I woke up this morning it would have blood on it and I wouldn't have to worry or stress about being pregnant; not what happened. I just woke up and went to the bathroom, took out the tampon and still there's nothing on it. I am freaking out! I cannot be pregnant, I've got a little bit of medical issues going on, me and my boyfriend are both in school and wanted to get that done with before we settled down and started having kids and got married, plus I'm 23 and he's 24. 

Could I REALLY start showing signs and my period end that quickly if I got pregnant, or if I hadn't really started my period and I was just bleeding from not having sex like that in awhile??😟😞 

This is SO scary. I knew my luck would run out, and eventually I would get pregnant, I just wanted to wait until I was married and out of school at least. 😰 

Can anyone give me any kind of helpful tips with anything, like being able to really know if I'm pregnant (idk if a pregnancy test would show up so soon), or just how to cope with this… my parents would FLIP!☹️