OPK Accuracy

I have never tracked ovulation symptoms. I had a mc on March 27th and a d&c on March 29th. I got my first cycle on May 10th. I started taking opks right after I ended my AF and it showed a peak on cd10. Are opks pretty accurate? I dont really know what symptoms to look for during ovulation, all I'm going by is my opk results. But I bd'd a lot thru the week. Do my chances look good?