hi dear, glad that you are listening to your body! I was a gym rat before pregnancy, went for classes at least 4 times a week. but once my pregnancy symptoms kicked in (nausea, fatigue, breathlessness etc) I completely stopped all exercises. even prenatal yoga made me feel faint. I gradually started having some more energy in mid of 2nd tri, around week 18? then I started just walking more and doing some prenatal pilates/yoga by following youtube videos. it really helps to take it slow, adjust to your pregnancy stamina and keep moving even if it's just walking 15mins a day or stretching your muscles. all the best for your pregnancy! 💕