Help!! I am 12days post iui


I'm 12 days post <a href="">iui</a>. This morning I tested and got a line so I freaked out. I tested every 2 hours all had lines except the digital. Could this be from the ovidril shot?? I tested yesterday and I had 2 negatives. The medi center gave me a preg test 1 week post <a href="">iui</a> when I sprained my ankle and it was negative. I just don't want to get my hopes up if this is just the shot