Charlotte,

I'm not sure that you can take too much notice of the temps and FF at this stage as you haven't been taking your temps at the same time.

How many days have you had a +ve OPK for? I've read that during O you can test +ve with the OPK at the start, peak and end of the LH surge which can take things over 3 days. I've also read that your body can try to O and then for some reason the egg doesn't pop out. If this happens then the body can try to O again straight away and you get a 2nd LH surge which would mean +ves over several days.

Also you can return +ve OPKs when you're pg. If I were you I think I'd do a HPT. If the test's -ve and you're TTC then I'd bd like crazy! Keep doing the OPKs.... things will sort themselves out.

Good luck!