Can ovulation time change drastically one month to another?

Carla • Happily married💍 mother of four, baby #4born on April 29-2022💗🎀

So I’m “supposed” to ovulate on cd16 but on my cd11 this month I had egg-white cm, I didn’t had a peak on my opk but it was close, I had acne and I was bloated. Now that I’m in my “ovulation window” the line on my opk gets lighter and lighter but I feel kind of bloated too 😥 ... I’m sooo lost... I feel like opks don’t work for me and that’s why I’m not getting pregnant. My cycles are about 32 days so I should be ovulating on cd16 or 15... any suggestions?