Spotting vs Period

I started spotting on Tuesday which is a week before my period is due (tentatively since my period is usually a couple days late since my miscarriage) and I had heavier spotting yesterday but today I'm back to light spotting again. It hasn't ever gotten bright, it's been brown. I have had some cramping on and off. I don't know if I should count this as a period or not. I have PCOS and had a miscarriage in January at 12 weeks. I know we're not doctors mostly, but what do you guys think? I'm kind of concerned but I don't want to overreact.