Not sure if I should test or not?

My period was due a week ago. The past two days I've felt like I started but when I go to the bathroom to check it's just discharge and the smallest amount of pink ever when I wipe. Idk if this counts as a period, or if I should test? I haven't had a full on period. It hasn't even stained my underwear. And it's not every time I wipe either. Just maybe 2 times a day it happens. After having sex there was a little more pink, but not much at all. What should I do?