loosing your virginity/starting to have sex

jane
so basically ive been having sex for about a month now and the last time i did it which was about 3 days ago it has given me a sore abdomen and lower rib cage since then. I also have been bloated for a while and felt my belly swell. obviously pregnancy did cross my mind but then i read all these comments online, of a bunch of girls who expiriennced the same symptoms as me. those girs also expressed having larger breasts because of loosing their virginity. while mine don't seem larger they are semi sore if i press on them. i just want to know if you ladies have any insight on this. does it sound like im pregnant? keep in mind i lost my virginity about a month ago but barely started feeling these symptoms much more since the last time i had sex. could it be because the last time i had it, it was also really pleasurable? is that why im noticing these symptoms more? any feed back would be greatly appreciated.