My girlfriend stopped having her periods but she hasn't had sex and it's been two years since her last period. If we have unprotected sex is there still an opportunity for her to get pregnant?

I had a surgical abortion at 10 weeks in February. Besides the abortion, I have never been to an OB-GYN, but because I am getting married in May, I would like to go soon. Since it is likely that I will move and never go back to this particular OB-GYN, is it necessary that I tell her about my abortion? Will she be able to tell during the examination? I've read that the cervical opening looks more like a slit than a circle after it has been fully dilated, but I doubt I was fully dilated for the procedure. I don't want to lie or be tricky, and I know it is best to tell a doctor everything about your medical history, but since this will likely be a one-time visit with a doctor I know very little about (ex. pro-life or pro-choice), I would really prefer to avoid the topic if at all possible. Thanks!