It takes five days to establish a pregnancy, so if you're fretting from days 14 to 21, just let yourself off the hook. Nothing detectable will be happening before then. On day 21 you do a progesterone test, and this is when you start to get an idea of what's happening. Under 40 - you can assume there's been no fertilisation.

There's two hormones you need an abundance of to confirm a pregnancy: one is progesterone and the other is HCG. The gestational range for pregesterone is 37-205 (or thereabouts). At the same time you need an HCG level of about 400. If you don't have either of those, there is no pregancy. I view the progesterone reading as the key: an egg needs loads of progesterone to feed itself and to thicken the endometrium. A good egg will do all this for itself, and that's when you're more likely to get across the line.

With both progesterone and HCG, they need to increase exponentially on a daily basis during the first trimester. They both go up to the 1000s! So reading like P-32 and HCG-52 are pretty much a no-go.

Hope that helps - and BTW - when I said one month on/one month off, I meant with the FSH injections. Our clinic gives us a break from FSH every second month, as they don't think it's good for you. Me neither - two lead folicles and six minor ones were very sore after trigger!

:-)
OP.