I had gestational diabetes so I had to drink tea without sugar, and peppermint tea actually tasted quite refreshing without sweetness. Just check the ingredients of the tea bag to make sure there are no other weird herbs mixed in.
After my long IVF journey, I was scared to touch anything other than plain water. My doctor said a mild cup of organic peppermint tea is fine occasionally for digestion. Just take it easy and be gentle with yourself, you are doing great.
I used to have mild ginger or peppermint tea when I had bad morning sickness and it really helped settle my stomach. But if you are having severe vomiting or stomach pain, herbal tea won't cut it, pls visit your doc.
I had thyroid issues so I was super careful about herbal teas. Peppermint is usually okay for nausea, but it's always best to ask your gynac during your routine checkup. Don't overdo it, stick to one small cup.
Calm down dear, a warm cup of peppermint tea is generally quite soothing, especially if you have acidity. Just don't drink 3-4 cups a day. One cup in the evening is perfect, but if you feel any discomfort, just stop it immediately.