Very sad and dissapointed.. please advice

Lize

5 dpo felt nausea

8 dpo woke up with cramps

9 dpo tightness in my low abdomen

11 dpo diarrhea

In 3 days time AF is suppose to be here.

We have been trying for 7 months. I am so confused. I took a HPT and its a BFN. To soon??? My bbs isnt sore and my body is back to normal. Please give your opinion.