Bleeding confusion for pregnancy

The last time I had sexual intercourse was without protection which was about a month and a half ago and I have been getting no symptoms except some cramping because every month since then I have gotten light bleeding, not spotting! My periods are always way more than this amount of blood I’ve been having and I’m scared this may be a sign of pregnancy? It may be caused through stress ? I’ve had this light bleeding around the same time for 2 months ! It’s basically like a cycle but extremely light with slight cramps help!!