Ovulation

This is my first time ever writing something down on here but I'm a little stressed... i ovulated on Oct 12 then again 6 days later on Oct 18, well I'm not really sure what that means and it's frustrating me. I'm 18, and no I don't use protection, we usually always use the withdrawal method and I haven't gotten pregnant. I'm pretty sure I've ovulated twice before but I wasn't too sure. this time I know for sure I ovulated twice because of the way the clear slimy egg like cm looked like. Oh another thing. I barley got off my period this same month on the 7th and I don't recall ovulating this early before. someone please help I can't get this out of my head. does it mean anything? I'm not on birth control or anything like that either.