Lately no more EWCM.... No ovulation?!

I've noticed that in the beginning of us ttc I would pay attention to my body and notice around the time of "ovulation" according to glow I would have some or nearly close to ewcm..... Now I notice I don't have it at all. I was just thinking about it and I would have to say that over the last 3-4 months I really haven't had it. I have been using opk strips and I could swear I see the lines get dark but  at the time there's no ewcm..... Like none! I mean, I get my period every month and I'm pretty regular. I'm very confused! Could I not be ovulating? 😳What gives?! Don't I need ewcm or do I just need a positive opk? 😓