Magnum, you'll probably find it really useful to do the free online charting course offered by Fertility Friend.

As others have said, EWCM is the most fertile, but watery can still be fertile. Not everyone goes dry after ovulation, but the watery or EWCM usually stops. It's also common enough to have ongoing creamy CM in the second half of the cycle. Three sustained higher temps in a row indicate that you probably ovulated sometime the day before the temp rise started... When you 'should' test, is after your period is due, which, depending on your normal luteal phase, is likely to be 12-16 days after ovulation. Many people start testing far earlier, but the chance of getting false negatives in pretty high if you start testing at 8 or 9 days post ovulation. The benefit in starting to chart is in learning what your normal patterns are, as there are many variations on normal. You won't be sure of what's normal for you until you've charted consistently through a few cycles.

Hope that helps.