Evap . . chemical?!

This was the test I took yesterday on cd34. Cycle is usually 30-31 days. I had some brown spotting this morning then af came . . Is this an evap or would it be classed as a chemical or early m/c?! 🤷🏽‍♀️ I know the pic isn't the best, I zoomed into the original. I had been having abdo and lower back cramps for around a week (usually only get slight cramps in my stomach a day or so before) and today when I started bleeding the cramps were really bad and I was doubled over 😖