Early Symptoms!

I usually test about twice a month if my period is late, and because of my odd menstrual cycle... I kind of just use my period tracker app as a guideline. So, I first didn't really think anything was strange when my period was "late" again, but I soon noticed light cramps without blood. It's the symptom that made me test for the third time, and I notice this faint line on my pregnancy test! (July 27) Cramping is still the only symptoms that I'm noticing, but I have been told by my doctor that its okay since I'm early in my pregnancy. (32ml on July 29) They estimate that Im only on my third week, and my line has started to darken one day ago! Cramping is honestly such a scary symptom since Google tends to related it to early miscarriages, but I have learned to relax about it. XD