I don't know what to do

Amanda • I'm a mommy to a bueatful 3yr old baby girl who is begging to become a big sister💕❤
I was supposed to get my period the 21st but in stead I got pink mucus it lasted 2 days and my period is usually kind of heavy I took a pregnancy test the 24th and it was negative im feeling very nauseous n my breasts hurt so bad I'm getting really bad headaches and I'm tired all day I sleep about 9-10 hrs a night.  I have read that it can take up to 2-4 weeks for a pregnancy test to show that u are pregnant does anyone have any recommendations on what I should do? Should I wait to take another test should I go see my doctor?