**About Home Pregnancy
Home pregnancy tests are usually about 97% accurate, but this varies from brand to brand. In order to get the most accurate results, it is a good idea to wait for about a week after your missed period . This allows more hCG
to build up in your urine, which will allow for a more accurate test. Some urine tests can be used on the first day that your period is due, however, it is unlikely that you will achieve that 97% accuracy rate if you test so early. It is best to perform a urine test in the morning, before you drink or eat. This will allow for a buildup of any hCG in your urine.
HCG is called pregnancy hormone and as long as time goes,its positivity will increase.
So dont worry,do immediate pregnancy strip test and call your doc.
All the best.