You did NOT get pregnant from fingering yourself as mentioned in your previous post. There is no point in watching for signs or symptoms of being pregnant. You are not pregnant.
Are you sure it was the last day of your ovulation? That day should have a sticky/tacky discharge similar to a paste made of flour and water. I don't know what your discharge may mean, but you wouldn't be having pregnancy symptoms already on day 15 or so of your cycle. That's way too early.