Do you mean you're from Sidney, AU?
No you're not pregnant, you've had normal periods since you had sex, and negative pregnancy tests (they would show positive by now). Just because you feel like your belly is bloating doesn't mean you're pregnant, it can be many other things like your period coming on again, or after eating bloating can happen. If you're not trying to get pregnant you need to use two forms of B/C, the pill, shot or patch AND a condom, it's extra to make sure you don't get pregnant, and it prevents STD's, because the pill and shot don't do that. Good luck!