Coming off BC to try to conceive ! HELP .

So I started some birth control pills last month & literally took them for about a week & a half & stopped them cause I started bleeding again after having a period two weeks prior & we are actively trying to conceive now . So this bleeding lasted almost 3 weeks & ran into the beginning of July & now it says I’m due for another period two days ago & haven’t gotten one yet ? I’ve tested for the last 2 days BFNs & about to later but as of yesterday BFN . I usually spot & cramp before periods & nothing yet , I’m not sure if I ovulated Yet & not sure when to even check when I ovulate . I have really bad cramps & I’m always nauseous or bloated but no spotting . Any help ???