Ovulation and AF question!

Jessica
Okay, I'm still learning about my body and ovulation peak times and just when I think I have it figured out my body throw me for spin. My husband and I have been TTC for about 7 months. Well because I was on bc for about 10 years, I'm not sure what's normal and what's not because I wasn't worried about that when I started bc anyways because I wasn't worried about getting pregnant. I started it due to extreme irregular periods. Well now that we're TTC and I'm looking at it more, I'm noticing things.. For example, for the first 3 months I don't think I even ovulated. I never had the discharge (not enough to see if I did, anyway) I read in here that meant I was fertile. But about end of November, I saw it and since then have looked for it but I'm still not that regular.. No too far off but not real regular. 1st month after ewcm ws noticed, I was 1 week late.. The next month I was 1 week early.. Now this month AF is supposed to be today, and I noticed I had EWCM.. I'm confused? Does this mean I'm ovulating now the day of AF? Or that I'm just now ovulating so AF will be 2 weeks late this time! Help!!! I we any to figure this out so we can actually get it right and be able to track it better!!