Ovulation tests as pregnancy tests??

Melody
So I read that you can take ovulation tests as pregnancy tests... I ovulated 9 days ago and I took an ovulation test 2 days ago just to see if it worked. I expected to get a negative but it was almost positive! I took an FRER yesterday and it was negative. If my husband and I looked really hard there was the barest hint of a line. Well I took another ovulation test and its suuuuuper positive. Has anyone else tried this and it worked??
I had an m/c last month and we avoided sex on my fertile days. But we did it once in the very beginning of glow's projected fertile days... 
Also has anyone had a miscarriage and concieved the next month with a healthy pregnancy??