Does ewcm always mean ovulation?

Hey ladies! I had ewcm April 30, 2016. I had sex with my hubby on May 5 and May 12. I'm just wondering if ewcm always means you're ovulating/going to ovulate soon? My cycle is not regular (I had a miscarriage on Feb 18 and my period started April 10), and I haven't ever charted or anything so I'm not sure if I ovulated. I've been having small amounts of brown spotting since yesterday and I'm wondering if I could be having implantation? But then it'd be unlikely that I ovulated when I thought...thanks in advance for your help!