Can stress make your period lighter?

Hi Um.. Stress can indeed make you period lighter. I expericenced the same , I thought i was pregnant( which I wouldn't want) But yet I got this bleeding which was light but yet still heavier than spotting! I hope I am not pregnant because I am diffinately not prepared.I have been stressed out over the pass 2 weeks about pregnancy and stuff, So stress can triger a ligh period :P