Could I possibly be pregnant? please answer!

[Distressed_soul]

Me and my boyfriend, for the first time and unplanned, had sex two days ago...or rather, it was not really sex because we were simply curious and he slid into me a good few times. this happened on Oct. 31 (yes, halloween).  The next day, we did the same thing, but it was again out of curiosity and not really something that I would call sex. Today, this morning, we DID have sex, however unlike the last two times, he used a condom. I have been nervous for these three days however, about the first two times we did it. I learned that pre-*** is actually something that could attribute to pregnancy, due to the fact that the semen might have sperm in it. Also I am not on birth control, nor did we use a condom. On the first night we did anything however, my boyfriend made sure that he was clean before he slid into me, so there wouldn't be any sperm on him, but it's the pre-*** that worries me. Also, my period should be here soon, so I am a bit confused about a common pregnancy symptom. They say that bloating is an almost immediate effect when you're pregnant. I USUALLY bloat before my periods, but I don't know if this is because I could be pregnant, or if it is just normal, due to my period being close. I have scheduled a doctors appointment for birth control, and for a gynecologist to examine me as well for this thursday, but I know it is way too early to determine if I am pregnant due to the fact that the first time I had sex was on this previous Saturday (the first time he was inside of me). What are the possibilities that I could be pregnant from what has happened? And how soon should I take an at home pregnancy test? We are both 18 btw, and even though I know it is our fault for experimenting dangerously like this, we are not ready to have kids yet, by any means.

[Distressed_soul]

I forgot to mention that he also never came inside me. He always pulled out, even when using a condom. just fyi. Thank you for reading.

[Birchrus01]

Don't count on this, but i wouldn't worry. Bloating doesn't occur till much later. about 3-4 weeks. So i would count on your bloating as a sign that your not pregnant. Hope this helps.