Sweating is actually completely normal in early pregnancy! Hormones go crazy in the first few months, so your body heat rises. Just keep yourself hydrated and stay in cool rooms as much as possible.
This is a classic early symptom due to progesterone spikes. While it is mostly harmless, if you experience high fever along with it, you must contact your gynac immediately. Otherwise, just stick to loose clothes and proper hydration.
Honestly, it is very common because of increased blood flow and hormonal changes that affect your body's temperature regulation. My doctor told me it's just the body working overtime. Keep drinking coconut water and wear breathable cotton clothes.