Which one should i belive?

K so glow has my fertile window starting the 19th along with ovia but kindara says according to temp it was last week. I think that would be too early in cycle I am on CD 12 now .......what do u think ? Yesterday I did feel nausea but could of been fro. Something else my sex drive has been increased but isn't that just cuz I know we are TTC? Cm was wet & maybe a little bit stretchy last night.(learn more on Glow: https://glowing.com)