false positive ovulation?

Ja
I used the clear blue smiley ovulation test and I've heard you're super fertile after miscarrying. So I wanted to test to see if it would say fertile, not, etc. I took the cytotec to help progress the miscarriage Monday (I was so far along I needed help) and now I'm only bleeding lightly yet I got a peak fertility smiley. Is this false or can i really be able to get pregnant right now? Obviously it's too early but I just didn't know if it was a false positive and if this has happened to anyone else?