Hi, me and my OH have been TTC since December. AF was due on 22/3 and never showed. Impatient me tested on 23/3 and got a negative. However is is now 25/3 and still no sign of AF. I am pretty regular with a 28 day cycle. ALWAYS. I really want to test again but afraid it still might be too soon. How much longer should I wait to test again?