Brief Answer:
Likely due to hypotension

Detailed Answer:
Hi dear, I have gone through your question and understand your concerns.
Vomiting, nausea and decreased blood pressure are common symptoms of early pregnancy.
Decreased blood pressure causes dizziness, fainting and tiredness.
Your dizziness and inability to stand after vomiting is most likely due to hypotension( decreased blood pressure).
You need not worry.
You should continue taking Doxinate, take as much rest as possible and avoid prolonged standing.
Hope you found the answer helpful.
Please do get back for further queries .
Wishing you good health.
Regards
Dr Deepti Verma

---

Brief Answer:
Small meals at short intervals

Detailed Answer:
Hi dear,
Apetite is reduced in first trimester of pregnancy due to the associated nausea and vomiting. Try to eat whatever you like, as adequate diet is important for your health. However, do not take stress and try to eat small meals at short intervals.
Sleeping in fetal position is not contraindicated, but you should avoid sleeping on the stomach should be avoided in pregnancy.
Hope you found the answer helpful.
Regards
Dr Deepti Verma

---