Cd 12 scan iui on cd 14

Hi everyone my cd 12 scan showed 2 follicles of 16 mm and 2 of 14 mm now i will trigger at cd 13 and <a href="https://glowing.com/glow-fertility-program">iui</a> cd 14....my linning was 7,5 wich was border line..... will it get thicker by cd 14? So confused with all this i read u need 18 mm to trigger and a linning over 8..😵😕😕