Sorry for your bust cycle.

I used the OPK's ones from Lullaby Conceptions mail order. They were great. I used both the midstream and PIAC ones, and both worked well.

The PIAC once were cheaper, so when you are doing them for 5-10 days in a row it is better, but with having to do them at 2pm and working I used the midstream ones for convenience.

The postage is quite reasonable and they deliver very quickly.

Good luck!!!