Negative hpt.

Bree
I had a miscarriage three years ago at 14 weeks and when I found out I was pregnant I found out right away. The doctor said I ovulated late causing me to only be 5 weeks when I was supposed to be 8 weeks(according to my last period).
Now I am 9 days late for my period and i've experienced cramping. I took two hpt that were negative but it's not common for me to be over 3 days late. I know people say every pregnancy is different but I'm becoming worried and impatient. I plan on waiting two more days before I take another test and my doctor could not get me in until May 25th.
Has anyone else experienced negative hpt after being late this long?