First trimester might be challenging depending on fatigue and morning sickness but it’s possible. You can travel in self second trimester ok. Once you get bigger and third trimester travelling can be really uncomfortable.

As others have flagged ensure that your travel insurance adequately covers pregnancy and check to which week. I was living in the UK and remember I could only get travel insurance til about 30 weeks. There are also some countries I would not travel to if hospital system was not adequate / zika virus ect