16w in 2 days, constipated, burps, nausea

It’s normal. Everyone’s pregnancy are different. I did not have an easy journey throughout my 3 trimesters. I lost a lot of weight. I forced myself to eat - split in small meals, but quality over quantity food. I have low blood pressure and almost fainted etc. It does get tougher and harder, but a mother’s willpower to get through this is strong because we love our baby. As your baby grows, you will grow even more attached as you can feel him/her moving daily. Believe you can do it and stay strong! Drink more water and have sufficient rest. Sending loves and hugs to you.