Seriously need help!

Okay so bare with me for a second.

On the 14th I got a pretty dark LH surge so I considered that my O. Fast forward two weeks and what I thought was my period was one day late and very light amounts of mostly brown and some red spotting on the 28th and 29th. I had heavy cramping. Then it got heavier like a light period on the 30th. On the 31st it was back to spotting. Now I am having EWCM with tinges of brown. I went ahead and took a test yesterday afternoon and I swear I saw the faintest line(picture below). Normally my periods are 5-6 days with a steady medium flow.

Is something going on? Could I be pregnant? Am I just overthinking?