Ectopic Pregnancy?

Es
Hi, I'm 6 weeks and 4 days pregnant and I just read an article in another app about ectopic pregnancies. I'm really curious and also worried about a few things. Are there any symptoms  that let you know that you have an ectopic pregnancy? And how soon can doctors detect if you have it? Is there any way to save the pregnancy? Are there ways to decrease your chances of having one? Please help!