Opk Help...please. I have never had this happen.

So, I normally get one positive opk usually in the mornings each cycle like a barely positive, then when I take my evening test it’s negative. This cycle I have been crampy the whole cycle, not bad just enough to know I am. Starting yesterday I have gotten positive opks. Morning, evening and another this morning, and when I say positive very obviously positive. I find this unusual because I have never had this before. What could this mean? Any help or information would be very appreciated, my husband and I are actively trying also.