I was like you that early in my pregnancy! Headaches, fatigue, and I'd vomit all the time. Oh and cramps are very normal as well as long as they don't make you cry or bleed heavy.
Not at all!!! I was already throwing up every morning and sleeping all day at 6 weeks... I was lucky and didn't have a job when I first got pregnant so I slept the whole first trimester away. lol