Going crazy

Hey guys, so I am 22 days late for my period and had a blood test at 6 days late which according to the nurse read negative. I know for a fact that with my last pregnancy I have a low hcg. I have a million symptoms even a few I didn't know where symptoms. Me and my husband have been Ttc for 3 years and have only had miscarriages. I am so desperate for an answer.