Confused

Nee Nee

I’m currently 5 days late. AF was supposed to arrive Saturday but didn’t. On Wednesday of last week, I thought AF was starting 3 days early because I had light pinkish and red bleeding. I showered and put on a pad. However, I only had brownish discharge while at work. Not even enough to fill an entire pad. It only happened that one day and nothing since then. Have also had random cramping that lasts for a few seconds and stops. Yesterday morning they lasted a few minutes. My cycles are very regular and I don’t normally have spotting. During my fertile week I also received my positive for ovulation like I do every month. I’m so confused because my pregnancy test was negative. Has anyone experienced this? Should I wait until I’m one week late and test again?