2 days late (please respond with insight)

Leisha
I've been testing for over a week. All bfn . Not sure what to do. I got so sick yesterday at work I literally had to run to the bathroom and puke. I have strep throat but I don't think that would make you nauseous. So my question is shouldn't I be getting a bfp if I'm preggo. I also am getting sick at certain smells. I have 4 other children so I'm not new to being pregnant but this is the first time I've ever actually tried to get pregnant so I'm knew to all the stuff. I've always been like super late and didn't notice until like 3 weeks after my period. So I'm testing all the time and idk if I'm just testing too much or what. Please any insight or anything would be great. Just a bit of background info - 22/24 day cycles o day is normally 9 and I was due for my af on 3/8 or 3/9 (I use two diff. Apps for tracking.)I have been tracking my bbt and have had several spikes and drops so not sure I can always add pictures of those if it helps ! Thanks ladies