Is it implantation bleeding?

Hello. I’m expecting my menses in about 10 days time. Few days ago, I had veryyyy light spotting (only realised it when I wiped after peeing) for about 3 days. Decided to test for pregnancy 2 days ago cause am feeling unwell and wanted to be sure before I take any med but it turns out to be negative. Could it be too early for a test or could it be any other medical issues I should be concerned of? Thanks in advance for sharing/advices 🙏🏻