This one better not wait, please see your doctor or call the clinic today. Spotting that doesn't stop can mean a few different things, and you need someone to check you in person rather than guessing with a test right now. Your doctor can also advise when it's best to test based on what they find.
always had regular period as well so i tested positive well within a couple of days... can try again in a couple of days... wishing u all the best 💕