Concerned what do you guys think

havent had any pain or nothing but what does light brown spotting/discharge mean? Im like 4 weeks couple days pregnant 5 ) ( i've been spotting light brown for 5 days already on and off though.. like one hour i spot then like later i dont then 4-5 hours later i spot light brown again! My obgyn appt tomorrow but i also dont have pregnancy symptoms around these 4 weeks. The only symptom i think i had was like on and off burping, thats it

I heard some people get symptoms around 5-6

weeks