Liz I think it is definatly to early to get a positive reponse on a 20miu test.
I have never used internet cheapies so I do not have experience with the brand but 20miu most likely won't be detected until 14DPO or possibly even later.

The lullaby conceptions ones do seem to have a really good reputation, I looked into getting them a while back, they are quiet cheap and you can get 10miu. I think that they are the way to go .

Good luck today Liz, I am looking forward to seeing your chart this morning.