Tmi 5 weeks and 2 days pregnant

I have had off and on very light brownish discharge since probably week 4. Its not consistent and only a light amount. My nurse said this was normal because of my uterus expanding (theres many blood vessels there apparently). Has anyone else had these symptoms early on or even later? Im having normal symptoms like extremely tired, loss of appetite but always hungry, mild nausea after eating, Light headed when i dont eat, constantly thirsty, mild cramps that feel like period cramps off and on, my breasts are so sore and look bigger. I've had blood tests that came back well and 3 positive at home tests. Just wanting to know others experiences as i am nervous about everything and dont want to miscarry. Thank you!