Headache and nausea

Hi

I'm 8wk n 2dy pregnant with my first child. I've been getting really bad headache after I eat and then feel nausea all day. some days I'm OK and other day I'm nausea all day with headache. I've tried ginger biscuits, ginger sweets, ginger tea, mango, bread stick, cracker, meditation and nothing really helping. I don't want to be taking to much painkiller. Please can anyone give me some advice or is anyone going through the same thing. Thank you xx