You need one of those months where you get every single symptom and AF arrives anyway. Then you realise that there really ARE no symptoms. That they are directly related to progesterone.
Pregnant women will obviously disagree but that's hindsight. I believe in science and facts and progesterone IS science and facts. Until progesterone moves to HCG and you pick up a positive pregnancy, you're not "pregnant".
So if you think you're having symptoms, take a test. If they are true "pregnancy" symptoms - you will get a positive test. If they are progesterone symptoms (which are PMS symptoms as well), you won't.
Case in point - I never, ever get sore breasts before AF is due. For some random reason, the last 3 cycles, my breasts have been SO sore. I can't run down stairs without them hurting like shit. The first 2 cycles, I genuinely believed that it was pregnancy.
This cycle, I know for sure it's not. And it wouldn't be good if it was.
But goes to show that our bodies can react slightly differently to the same bloody thing every single month. The hard thing is to realise that the 2ww is just that. It's a two week wait until any discernible symptoms - such as a missed AF or a positive pregnancy test.