Help...

Allyson

I am 4 days late on my period. I threw up in the morning 2days late and 3 days late and felt queasy this morning. My boobs hurt really bad. I’m having light cramps on and off and back aches. I took a home test and it came back negative. I also got a negative blood test. How much longer should I wait to test again? Could I be pregnant still? Or am I going crazy?