No CM? Evening Primrose Oil?

Hi everyone. I've never posted before. But I'm now 31 and trying to conceive my second child. My daughter will be 9 in a couple months. I got pregnant for her while on the pill. This time around seems like it's taking forever. I took my last pack of pills in January. We started actually "trying" and taking opks in March. I know I'm ovulating Bc I can most definitely feel it. Everyone keeps talking about egg white CM and having a lot of it when they ovulate. I'm not noticing a lot or really any at all. Someone told me to try Evening Primrose oil. Which I just started yesterday. Any one try this and got pregnant soon after?