TTC first time, help please!

All discharge is cm (cervical mucus) what your looking for at your fertile time is ewcm (egg white cervical mucus) its basicly a clear stretchy goop that should stretch about an inch between your fingers without breaking and looks and feels like egg whites.

You normaly get it about 1-3 days before ovulation (im talking typicaly here as everyone is differant and people get random changes from one month to the next) so for a typical 31 day cycle day 17 would be the adverage ov day so ewcm would start about day 14/15 but then you may be having a short cycle this month or you may have a longer luteal phase then the adverage 14 days, getting some opk tests will give you a better idea if your aproaching ovulation or not.
If your getting what seems to be fertile cm then best to cover your bases and start having sex anyway as you may be ovulating a little earlier then expected