How long should I wait to take a pregnancy test after one negative test?

Charla
Hi. We have been TTC for 10 years and have had two miscarriages. I have very normal cycles (28 days exactly never late) and the only tines I have been late were the two times I was pregnant. I am now one week late. Took a test yesterday and it was negative. How long should I wait to retest? Feeling hopeful!!!!