2 different AF start dates...?? 🤔😑

So I'm a part of 3 different apps. Two of which told me AF would start on the 10th of feb. This app told me the 12th. But this app is always right, as apposed to the other two. It is currently the 14th... and af still hasn't come..

I got off the pill in July, and my 5 previous cycles were 27-28 days. January af was late and I tested positive but had a chemical at cycle day 32.

I'm so confused because cycle day 32 was yesterday... should I test now? Or wait a couple more days? Should I consider myself 2 days late or 4?...

Any advice is much appreciated! TIA!