Well, I'm no expert, but if you ovulated towards the end of the range you gave, I think you still have a chance this month! Best of luck!
I, personally, think that 10 days before your expected period is too early. However, if you are pregnant and it was a 3 on the 18th, then it will double every 2-3 days, so take an hpt on the 25th or 26th and it should be high enough to register!
Good luck!
I have a colposcopy scheduled on the 26th.........I'm thinking I should reschedule. I was planning to test that day but if I am pg and it still doesnt show on that day I WOULD BE DEVISTATED IF something happened becuz of the colposcopy.........