Plz help need answer about bfp

[ILoveme29]

So to be brief I had iui done oct.13,14 took Ovidrel shot the 12th. I know it says it stays in your system at least 10 days so today makes day 11 post shot. However I took a test yesterday to test out trigger and was negative didn't show anything. Today I was extremely sick nauseous bad headache and dizzy so decided to take one and Bfp. Has anyone else have this happen or know if it's still possible trigger?

 

[auntsas]

I don't have much experience but wanted to wish you luck and keep my fingers crossed for you ! Be interesting what today's test shows!