Negative OPK's during fertile week ๐Ÿ˜“

Kelly ๐Ÿ‘ง๐Ÿผ๐Ÿ‘ผ๐Ÿผ๐Ÿ‘ถ๐Ÿผ๐Ÿ‘ถ๐Ÿผ โ€ข Married ๐Ÿ‘ฐ๐Ÿป (2008), 1 DD ๐Ÿ‘ง๐Ÿผ๐Ÿ’–(2012), 1 DS ๐Ÿ‘ผ๐Ÿผ๐Ÿ’™(became an angel 2/26/16), spontaneous B/G twins ๐Ÿ‘ถ๐Ÿผ๐Ÿ’™๐Ÿ‘ถ๐Ÿผ ๐Ÿ’–(2017)
First cycle after chemical pregnancy. I typically get a positive on CD 14. Today is CD 13 and the lines aren't getting darker, seem to be getting lighter even. Anybody else in the same boat? I keep BD'ing with my husband just in case!ย