Don’t know when

williams

Hello! So I have this app and another ov tracking app but The say I ovulate on different days one sAys the 19th one says the 21st I had sex on the 17, 19, and 22nd my period was on the 7th but it was really light and I kept spotting for like 7-8 days I took a test today it was negative but I’m not sure if it was too soon or maybe I’m not pregnant… does anyone have an idea