Testing early

My period isn't due until Friday but glow recommended I test today. Did one this morning with a cheap chemist brand saw nothing, binned it. A while later I picked it out of the bin and saw the FAINTEST line ever but thought it could be an evaporation line. Bought a more expensive test this afternoon and was planning on taking it tomorrow morning but I couldn't wait.... And the line is so clear now! So excited!! ❤️