Pregnant??

Hey guys, I’m really stressed not sure if I could be pregnant but I’m currently 7 days late on my period I took three tests and all three came back negative I took two yesterday and one this morning, I have been stressed I had kidney stones right after my period last month and was on a bunch of antibiotics, my grandad passed away two weeks ago so I’ve been stressed with that, should I wait another week and take more tests? And if they are negative go to the doctor?