Possible Causes for Constant Nausea?

I think it’s impossible to say. I know you don’t want to hear this, but you have to see a doctor. They can do tests to find out why you keep feeling nauseous and having headaches. This is not normal and you need to speak to your doctor.

Anxiety, been there, done that..got the T-shirt. Do see a doc though, don’t worry about the money.

You referenced your dad’s GF saying a bad diet. What do you eat? Have you had any antibiotics in the last few months? Antibiotics can play havoc with your gut bacteria.

And as others have said, it is best to see a doctor.

Only a Doctor can answer this since he/she will take down your history and any other symptoms you are or have been experiencing. I suffer from constant nausea and headaches, but I have put mine down to menopause and also chronic anxiety. I drink a lot of ginger tea which helps. I can also get nausea when I don’t eat for long periods. The best thing to do, though, is chat to a Doctor.

What is a normal daily diet for you? BTW, I am not a doctor. But if you are going to ask for suggestions you may want to answer what do you mean by poor diet.

Are you eating a lot of greasy of fatty foods? Or drinking a ton of caffeinated drinks? Do you lay down after eating, or are very overweight? Or are you eating too little calories. Are the medications you are on for intestinal issues? There are a ton of reasons. From hormones to diet, to what you do right after consuming your food that can effect how you digest.
If you are under eating, it would explain the nausea and the headaches. Your brain needs nourishment to function.

But do see a doctor. It can be any number or things that can only be found out with testing. But if you want to rule out diet, you have to be aware of what you are doing wrong first.

Do you throw up or just have nausea?

Maybe you are pregnant?

Please see the doctor. Your parents would rather you take care of something early instead of waiting for things to get worse and possibly take more care than it would be now. You are important to them. Please make an appointment.
Feel better. Let us know you’re OK-
Take care.

What medicine are you taking? The best nausea drugs are all
prescription.

Does it happen after you eat?

Any possibility you are pregnant?

Is your blood pressure normal?

By constant headache do you mean all day long everyday, 24 hours a day? Or, that you are getting one every day around the same time? How bad is the headache, and where on your head?

Do you drink caffeine? Coke, coffee, chocolate, etc.?

I don’t think it’s your diet, unless you changed your diet drastically since this started. Have you? Are you avoiding carbs and sugar? Carbs feed the nervous system. Avoiding salt? Salt helps keep you hydrated. But, if you are having high blood pressure you might need to avoid salt.

Have you been dizzy at all? Vertigo causes horrible nausea, but I assume you would have mentioned being dizzy if you were.

I went through almost two months in my late teens with horrible unexplained nausea after I ate. I also am phobic about throwing up, and it was a horrible time for me. It finally sent away. My guess is it was a virus of some sort. Some weird virus. I didn’t have a constant headache though. I think the headache is a reason to see a doctor sooner rather than later. Just to be sure. Headache is not something to play around with.