Hello everyone. It's been a year since I had my baby. My period starte…

Hello everyone. It's been a year since I had my baby. My period started six months ago. It's coming and going as it pleases (they explained that this is normal, and it will be restored within a year). The last time I had my period was two weeks ago. Since yesterday evening, I noticed a red spot on my underwear. This has never happened before. Naturally, I am worried because I have an appointment with my gynecologist at the end of the month. So maybe someone knows what this could be?