I’m so scared of not actually being pregnant!

This is my first time ever being pregnant after trying for 2 years (I’m 5w now). I got my positive and even got it confirmed with my PCP. I haven’t had any spotting or bleeding or even any alarming symptoms, but I am so scared of my pregnancy just going away. I know this is probably a stupid thought, but I feel the urge to keep taking tests just to know I’m still pregnant. I’ve also lost about 8 pounds since finding out I’m pregnant. Is this normal?!? Or has anyone else had these fears??

Baby dust to you all!!