Thanks for posting your query.
It is really confusing!
You should repeat the home pregnancy
test in a week; get a pregnancy kit of a different brand and use it as soon as possible after you but it.
If still the test negative and symptoms persistent then you must do a more specific test the serum hCG
levels and a ultrasound
Ultrasound would pick up if some other pathology is causing the trouble eg. hormone secreting ovarian tumor
I hope you would be benefited with the advise. I will be happy to solve your further queries. In case you are satisfied with my answer, please close the discussion and put a rating for it.