Anxiety

Cl
I found out 2 days ago that I am pregnant. I've only taken 1 test. (It's only partially positive. I'll attach a photo.)
 I am planning to take a couple more just to be sure. I haven't told anyone but my boyfriend that I'm pregnant. I'm nervous that I won't test positive again. I'm also worried that if I am pregnant, that my baby isn't okay. Any advice on dealing with the anxiety?