Ongoing nausea for months & weight loss

Hey,

I (female, 32 years, no smoking, no drinking, no drug use, no known medical conditions, now severely underweight with a BMI of \~16) have been battling ongoing nausea for several weeks now. Eight weeks ago it got really really bad so that I had to stop working, because I can’t really eat and am weakened. Even before that I had nausea several times per week but it always went away after a couple of hours.

Symptoms: \- nausea \- Weight loss \- body ache in the joints \- exhaustion \- low blood pressure \- Fast pulse \- sleep problems

What I did:

\- I had a gastroscopy without any results. \- no signs of celiac disease \- i went to a cardiologist who said my heart seems healthy, but I have \- low blood pressure. Likely due to being underweight \- my pulse is fast 100-120 \- I have a orthostatic reaction when I go from lying down to sitting/ standing \- ultrasound of the organs in the belly seemed fine \- thyroid blood markers are fine

My GP suggested I start an antidepressant in case it’s psychosomatic. I am a bit hesitant because I have no other psychological symptoms, one of the main side effects of the antidepressants is nausea as well, and I went to a therapist who told me that I do not appear depressed to her.

I don’t boycott the antidepressant. I will take it if necessary but is there something else I should ask for/get tested for first?

My boyfriend stumbled over the illness “morbus addison” and it does fit very well, however I read that it’s very rare. So I don’t know if I should explore it or just start the damn antidepressant.

At the moment I take dimenhydrinat daily, which can’t be good….

What tests should I ask for? Is there any medication for nausea I can take daily without risk?

Thank you in advance