How much longer should i wait??

So i went off BC in mid December which makes this my third cycle my hubby and i have been TTC. The first cycle i was just waiting for AF to come after stopping the pill (i didn’t get a period on the pill so i had no idea when to expect it) the second cycle i got my period in 27 days. So now on this third one, my expected start date was yesterday and AF still hasn’t shown up. I took a pregnancy test (the cheap Walmart brand) 4 days before my expected start date and 2 days before my expected start date and both were BFN. I was on the pill for like 8 years straight and was really bad at tracking my cycle before so i have a hard time remembering if my cycle was regular or not. How much longer should i give it before testing again? I hate wasting the money on tests and getting my hopes up buuuut I’m also gonna be 2 days late tomorrow 🤷🏻‍♀️🤷🏻‍♀️ help a girl out