Are you charting? Doing your temps I mean? Only way to know if you have ovulated, OPKs will only give you an idea at best and even if you do see a positive, this won't mean you definitely ovulated. If you use OPKs in conjunction with temping, you can see whether your lh peak has resulted in ovulation soon after because your temps will show a distinct shift upwards, and they will stay elevated until close to or on the day of af, if you don't become pregnant. Temping will also give you a much clearer idea of any issues happening, as temperatures are quite telling. I don't mean to suggest you have any problems of course, but if you did have, it should be fairly evident in your temps