Curious? Need help!

I'm just curious how many ladies had a "period" but then spotted for about a week after on and off? I've never spotted after a period. Sure I have before but never after and I've read some things that spotting could be a sign of pregnancy? My last period wasn't heavy, lasted 4 days. My SO and I haven't been using protection.. so my question, have you ladies experienced this? I don't get hungry a lot throughout the day, but when I do get hungry it feels like I haven't ate in days and I eat soo much. Headaches too. So have any of you girls experienced this? And if so can you comment below what came of it? Etc. Thanks so much

Going to test Saturday..