9 days late negative test

Hello friends! I got pregnant August 2018 with my first baby. I tested after my period was 6 days late and got a very quick positive. My periods are very regular every 28 days so I knew something was up. I sadly miscarried our sweet babe and we’ve been trying again ever since. My period is now 9 days late but the one test I took was negative. Im slightly cramping, but randomly nauseous, and having some lower back and hip pain that i don’t usually have while pms’ing. I’m trying not to get our hopes up so should I wait a few more days or go get the blood test?