when will I get a posative.

after my misscarrieges. i dicided to start using ovulation tests. after 3months i fanilly got my posative ovulation test. my cycle is 28days. and i got my posative 12days ago.. but am due on my period tomorrow. ive been being sick 3days in a run and bin really tired. plus my partner keeps saying am being really moody all the time. witch i agree with.
i took a pregnancy test 3days ago. was negative. so i took one the next morning still negative. but i feel pregnant. if i take a test now will it tell me. ive read people saying you take a test 16days after a posative ovulation test. but am due on tomorrow. and its only bin 13days? is that normal. and will a test tell me today? or would it of told me a couple of days ago.?xx

Try testing in two days if your period doesn't start tomorrow. 14 days after ovulation/sex is pretty accurate for getting a positive.