I am very sorry to hear about the first pregnancy being ectopic and lost. That's always hard. I think women go on to have an increased risk of another ectopic but it isn't huge. It's roughly 15 percent increase in odds. That's 1 to maybe 2 times in 100 women who have had an ectopic pregnancy. :>) Low odds. But I would talk to your doctor about it. I assume you'll be monitored more closely and an ultrasound will be done early to locate where the baby is. Those urine kits are really effective. I would imagine with your history, calling your doctor is the best thing to do! They may or may not want to see you in the near future. Take your prenatal vitamins and congratulations sweetie!
I think it is normal to have cramps in early pregnancy. Naturally you would worry, since having had an ectopic pregnancy is a pretty unforgettable thing. Why not go see the doctor and get an ultrasound? They would be able to tell you where the baby is immediately, and would take seriously the need to know.