Has anyone had any experience with Ovidrel trigger shots? I am on my first round of Clomid because of irregular periods and was given a trigger shot of Ovidrel 2 weeks ago. I did a First Response test yesterday and got a strong positive and a Boots cheapie which gave me a faint positive. A Boots test on Sunday came up negative. I retested this morning with another Boots test and got a slightly stronger positive but this could be down to the fact that I tested first thing. Not sure when I can tell for sure that the test is picking up genuine hcg and not hcg from the Ovidrel. Any ideas?