TTC. I need some help, advice....

Hi. Okay so I’m feeling really anxious.... I need help because something weird started happening yesterday. It’s been 8 days after my last period and I’ve been having some spotting, really light, It was a light pink tone at first and then changed to like a brownish color. I’ve also had some light cramps, lower back pain as also. I don’t know what to think, is this something I should worry about? I’ve been trying to conceive for a year now and I’m starting to feel a little excited, could it be that I’m pregnant? I’m scared, heeeelpppppp !!