Hi Shellstar76,

I'm TTC for baby #1 & I'm also charting & about to use an ovulation kit for the first time. Ditto, my last 2 cycles were 33 & 37 days and I too am normally 28 days. This month I wondering will I have a long cycle or go back to normal 28 day cycle. I'll most likely start using my 'o' kit around day 11 and go right thru to day 20 (37 day cycle). Basically cover my short and long cycles. Yes, I know its alot of testing but I've stocked up the kits as I knew this might happen to me. So as of next Tuesday let the testing begin.

My test kit says, if your cycle is:

27 days, start to test on day 10
28 days, start to test on day 11
29 days, start to test on day 12
30 days, start to test on day 13
31 days, start to test on day 14
32 days, start to test on day 15
33 days, start to test on day 16
34 days, start to test on day 17
35 days, start to test on day 18
36 days, start to test on day 19
37 days, start to test on day 20

Hope this helps.