Late on Period

I’m two days late on my period. I had light pink spotting today when I wipe and cramps. I took my Mirena iud out in March and after two months I’ve had regular periods. I’m wondering if this is normal or I should get a pregnancy test. I know stress can effect periods - which I have been with work and finals. I also have a bad cold I don’t know if that will have any effects. Any advice would help. Thanks!