hi. can someone help me.

I am officially 13 days late period today. i took a test on the 7th day and it turned out to be negative. never had my period this late, my period usually late 1-2 days only. But I have these symptoms. nausea, burps almost vomit, gas, headache, dizziness, leg cramps esp at night before sleep, lower back pain, bloating, stomach feels like stretching, not to forget increased in appetite, fatigue, urinating more during the night. i was planning to take another test on my 14th day late, but too afraid of the result cause me and my husband are trying to conceive after 8 months married.

please help me.