I need help tryna figure out if I am pregnant because I took a pregnant test and it and it had a faint line and I took 3more and they were negetive, and I came on but everday I feel like I am going to throw up and have pains in my stomach and head hurt and one time I felt light headed and I keep going to the doctor but they not helping and I need help

Itch from dry skin, rash, allergic to something used to clean clothes, dozens of reasons.

And most of the "signs" are not signs before you miss a period, but a month or two into pregnancy.
Also pregnancy tests need to be taken first thing in the morning when you wake up

Have you missed a period? If so, when was that period due?

As Chuck said, the itching can be due to many other factors.

You said, "i came on." That means you got your period, right?

Negative tests and a period mean no pregnancy. Your physical symptoms would be too early and are NOT pregnancy symptoms.

Didn't your doctor do a blood test?