Hello
Thank you for your query.
The leaking fluid you describe is seminal fluid, which liquifies after some time, and might appear watery.
Regarding your fertile days, if you have a regular 28 day cycle, ovulation occurs on day 14, so for 2 days before and after it, are your fertile days.
If your periods are irregular, you cannot count the fertile days in this manner.
You should use
Ovulation Predictor kit or follicular monitoring for knowing precise dates.
Also, you should get yourself investigated for irregular menstrual bleed.
It could be early
pregnancy which miscarried, stress, anxiety, weight changes,
thyroid hormonal fluctuations or
polycystic ovaries.
The consultation is all the more important since you are trying to conceive.
Take care