I don't know much about ovulation and i am finding it as confusing as you but I can share with you my little piece of knowledge!!!
The first day of your period is the day 1 of your cycle. Ovulation can occur between day 10 and day 16 of your cycle, but is very hard to detect. The cervical mucus thing is an indication but you need to monitor this over a period of time to really understand how yur body is working. Most books I have read say that you should have sex every other day to ensure that the sperm is off good quality. In reality this is quite difficult as we are old busy in our lives and the key is to have sex when you want to not just because it is the right time of the month!!
however I have been following aplan this month that I read about on the internet and if nothing else I have learnt what to look out for with my body. You need to buy some ovulation prediction kits. I have found they are cheaper to buy from the internet. But I started testing on day 10 and finally got a positive on day 14. The test measures the amount of Lutenising hormone in your body. Your get a surge of this 24-36 hours before ovulation. Once I had got the positive we went for it for 3 days!!!!
The other way to try and predict it is to track your body basal temperature. You need to get a basal thermometer and take your basal temperature every morning before you get out of bed. Your body temp will rise aftr you have ovulated. Once again you need to do this for a few months to really get a good picture of what is going on.
personally I have found the ovulation kit really useful. I normally get pains around the middle of my cycle and although I thought they were ovulation pains I was never sure. Within in hours of me testing postive I got the pains!!!
I don't think any of it is an exact science and apparently one of the main causes of couples not getting pregnant is just that they are not having enough sex at the right time of the month.
I hope that helps Wend, but I think that you can rest assured that we are all very confused and just when we think we know what our bodies are doing then they go and change again!!!!