6 weeks and feeling bleh

I'm 6 weeks today and this a morning I woke up super nauseous. It's like a switch flipped. I went to the store on my way to work and bought breakfast croissants and cheezits. I felt better for 5 min after eating. But nothing is helping. I'm miserable at work!! Lightheaded. And we haven't told family yet that we are expecting- so I can't tell my boss. How is anyone else coping with this? I feel like my boss just thinks I'm lazy right now.