DB,

I gather with some people pregnyl never shows up on a hpt. I know of one lady who tested after each pregnyl shot and never got a +ve. If your dose was 1500iu, it could be that it's out of your system already, maybe.

Not much help I know, but if you keep getting -ves over the next few days and then get a +ve on Sat, you'll know it'll be the real deal!