When to call and make my first prenatal appointment

Ju

I got a very faint line yesterday morning and a slightly darker, but still faint, line this morning. I am currently 13dpo.

My question is, do I call my obgyn now to set up my first prenatal appointment (their website says to schedule first sonography appointment for 7 week and first OB visit for 10 weeks), or should I keep testing and wait until the line is darker?

This is my test: it definitely has color in person. (13dpo, FMU, taken at 5 mins)