Having symptoms really early in pregnancy?

According to nurture I’m 4w1d I got a faint positive test a week ago and it has since got darker the last couple days I have been super nauseous, fatigued, & having the worst headaches of my life. With my first two pregnancies I didn’t get symptoms besides extreme tiredness until I was farther along at least like six weeks but this time I really barely feel like leaving my bed it’s been so bad I had to early out of work yesterday.

Any natural remedies? & do you think I might be farther along?