Anyone had a day 21 test a few days later?

Samia • Been trying since December 2012.
I am wondering if you could share your experience related to fertility tests. Have you had a day 21 test, how were your periods ie. day 14? Could you see a follicle if you have had a scan? My days are confusing. 
​Period scheduled: 27/06/14
​Spotting late at night 27/06/14
​Nothing 28
​Bleed; late night 29/06/14
​14th day ; 10 July 2014
​No follicle on 10th July
ovulation strip; positive 12th July day 16. 
​Day 21 is now : 17th or 19th July? 
​Help please- I need my progesterone tests. 
​Doc says 17 but she missed the ovulation day it was two days later than expected.
​Please share your opinions- advice.
thanks