That's interesting bean. I had accupuncture and got a bfp after a couple of months. DH has low motility and was taking vits. I had the strongest opk after accupuncture but also this cycle so my body seems to be behaving itself!
Sammy AF and preg symptoms are so similar. When I got my bfp I was expecting AF to turn up. Also agree with the others about implantation cramps. I can only imagine how hard this must be for you and I don't have any suggestions to make you feel better but I hope you can keep yourself distracted until test day.
Hope you're feeling better soon magpie 
More twins!!! Yay glittery
hope you start to feel better soon.
Fly your chart looks amazing to me and I wouldn't have thought you have low prog with temps like those. Fx for you.
Welcome city 