So I took a pregnancy test last week and it was negative, which gave me some relief. But I was supposed to get my period about 2 days ago, and today I've started getting this brown/light red spotting. I think I'm pregnant but not sure. Should I take another test this week?

2 days late really isnt a big deal. it could be stress or just a weird month. if you are on birth control that could cause it. i really wouldnt worry about it. atleast you are seeing bleeding. if it only lasts for like a day, then you might wanna try to test again

Yes, wait until your period is a week late before you take another test. Most HPT won't have a reliable reading until at least a week after your period is due.
Let us know when you find out, ok?