Hi Am 32 Years Old Got Married A Year Ago.

Hi am 32 years old got married a year ago. My periods are a regular 28 days cycle. I had 5 days late on my periods. My Lmp was 17th October. But 19th November I got my periods. My hpt was negative on 18th morning. I had early pregnancy symptoms for the past one week. Am confused and anxious. What should I do if I miss my period next month?