Hello,
Home pregnancy tests read well when performed 3-7 days after a missed period with a fresh early morning sample of urine. If she failed to do so, let her repeat the test after a couple of days. For a better and an earlier confirmation, you can go for the assessment of the serum beta-hCG titres. A trans-vaginal sonogram done a week after the missed period helps to know the status of the pelvic organs. The symptoms do not specify an early pregnancy and can also be premenstrual. Hope this helps.

Hi
Dr. Purushottam welcomes you to HCM virtual clinic!
Thanks for consulting at my virtual clinic. I have carefully gone through your case, and I think I have understood your concern. I will try to address your medical concerns and would suggest you the best of the available treatment options.
If her periods are regular, then simply keep watch if periods start in recent future.
It is always better to get urine tested on morning's first sample of urine, it gives more accurate results.
If repeat test after 5 days is also negative then it can be due to premenstrual syndrome. Tab B LONG F once at night for 3 months will be of help.
If she is looking forward to get pregnant,I will suggest indulging in a healthy diet and regular exercise regime.
Include plenty of fruits, salads, vegetables in the diet. Have adequate water intake , say 8 – 10 glasses per day.
Avoid deep fried foods, bakery products, and refined sugars.
Start on FOLIC ACID, B12 supplements at least 3 months before you plan to have baby.

I hope my answer helps you.
Thanks.
Wish you great health.