the difference is because your urine would be more diluted at this time of the day hun. Please don't stress.. 2 lines is 2 lines which means you have hcg in your system. and it is hard not to worry, I know, especially without knowing how many days past O you are.

Maybe try the first response with fmu tomorrow and if you still aren't sure I will post you another one! I just wish there was something I could say to make you feel a little better.