Help!!

So heres my story!

Ive been irregular my whole life but this app has been helping a lot and predicting very well! I was surprised to see that my longest cycle was 38 days! Thats a looong cycle!! Last month i got my period early and now im five days late and on day 39. Took a test wednesday and had a faint line! Im trying not to get too excited but its impossible im scared with my irregularity that its impossible as well! Trying to wait till im a week late (Monday). Advice? Stories? Anything!