Planning to go to Bangkok next month for work. 2 days 1 night trip. Baby will be about 6 weeks old. Should I bring baby along? Or should I leave her in singapore with the maid and hubby and leave behind Frozen breastmilk?

I would recommend you to leave your young baby at home. Bangkok is still quite dirty and their water is still unsafe for drinking. Let your husband and maid care for your baby. Meanwhile pump while you are in bangkok. If you are able to store and bring back those expressed milk, it will be good.But if you are unable to have access of clean water, do pump and dump the milk to prevent any cross contamination.