Ectopic Pregnancy?

My new fear is that this pregnancy is ectopic. I'm going out of town-far from my doctor-next weekend and I'm terrified that it will rupture and I will bleed out!! I have been having menstrual type pain all day intermittently in my extreme lower left pelvic area (near the pubic bone), and I'm so afraid that means a tubal pregnancy. I made an appointment to see my doctor on Monday, but I'm not even sure he'll be able to tell what's going on by then. At that point, I will only be 4 weeks, 4 days pregnant.

Have any of my readers had moderate pelvic pain on one side in early pregnancy and everything turned out all right? I'm so scared and would really appreciate any comments that might give me hope. No horror stories, please!!