Doctor Visit-4 weeks, 1 day

I finally called my doctor's office today because of the level of left sided pelvic pain I'm having. They're having me come in today for bloodwork even though I'm only 4 weeks, 1 day and then in tomorrow to see my doctor. I'm nervous because I don't even know what they can tell at this stage. From what I've read, even on transvaginal ultrasound, the gestational sac isn't visible for another several days or even a week. I'm supposed to go out of town on Thursday the 19th, and I'm really hoping for some kind of definitive answer by then, or that my doctor can advise me if it's still safe to go. I won't know much more until I see him tomorrow. It's also nerve wracking because the last time I saw him on a Saturday, my miscarriage was discovered.

I just hope if this is ectopic, they find it very soon and deal with it, so it doesn't endanger my fertility or worse yet, my life.