Please someone help!

I've NEVER taken an ovulation test before and I'm super confused about whether this would be considered positive or not??? please someone give me a little bit of insight...im confused because i had my period on February 11th and glow said I ovulated February 28th. according to Glow I am 4 days late and have taken multiple pregnancy tests but all were negative. last night I noticed more eggwhite mucus and thought maybe I'm late ovulating? I dont know. so most of the test line is as dark as the reference line but a little part of me says the ENTIRE line isnt as dark as the reference line...please ladies tell me what you think??