Scared 2Death No symptoms

I'm not having any symptoms today. Just four days ago I knew I was pregnant but now I'm 9 weeks and feel great. I took a 88cent Walmart test. And my line was lighter than previous testing. It could just be a default test because it's cheap or something else could be going on... I can never stay pregnant idk y.. I have had probably 2 miscarriage last year. And one health pregnancy ended due to car accident at 16 weeks.. if I lose this one it will be the first of the year