7 weeks and blood

I’m 7 weeks today according to my app’s since doctors won’t see me until I’m 8-10 weeks along. I have had light cramping on and off, and they are barely noticeable. I woke up this morning to use the restroom and when I wiped dark brown blood. It was not heavy and only there once after wiping three times. Has anyone else experienced this and should I prepare for the worst? Sorry for the picture but this is how to best show it