Hello, I Am 20 Years Old And Have Had A

Hello, I am 20 years old and have had a normal menstrual cycle for many years now. Last month i was 5 days late, this month i am currently 4 days late. I have unprotected sex with the same male partner of 2 years. I currently have breast pain and swelling, cramping, small bouts of nausea and acid reflux near bedtime, and white, cloudy discharge that has been heavy and sticky. Early this month i had been cramping which has been unusual, it lasted 4 days and went away. With everything i have provided, should i take a home pregnancy test, see my physician, or wait it out?