I'm glad you decided to come to our site. First of all, condoms are really necessary to keep you both safe. They're like seatbelts--they might be a bit uncomfortable to wear and feel restricting, but it's far, far better from seriously risking your health. We recently had a little discussion about this.
Since you may be pregnant, go to the pharmacy and buy a home pregnancy test as soon as possible.
Women's health care actually isn't that expensive--probably not more than going to your regular physician. Here's a list of Planned Parenthoods in Australia. If you are unable to get to one of these locations, then ask for recommendations from your friends about GYNs or find a female nurse (working at your doctor's clinic, perhaps?) who they see. Nurses will probably know who's the best GYN around. Use the phone book too if needed--I'm sure there are women's health clinics in Sydney.
Please get your boyfriend and yourself tested for STDs, and consider practicing safer sex in the future to protect both of you. Our site is a great resource, try reading through all of it.
A few of our articles: http://www.scarleteen.com/sexuality/safer.html http://www.scarleteen.com/reproduction/adv_luck.html http://www.scarleteen.com/reproduction/preg_risk.html http://www.scarleteen.com/infection/testing.html
"The level of our success is limited only by our imagination and no act of kindness, however small, is ever wasted"--Aesop