Yes that's normal unless your in pain. I had no energy what soever till around 18 weeks and I finally could make it through the day with out a nap. I have had way more gas than usual and some bloating as well try taking a Pro Biotic vaginal care daily. I do and it helps with all that.
I had all those symptoms. I'm 26 weeks. I still have zero energy. You'll feel ligament pains too soon enough. :) Such is life.
As your uterus grows everything gets squished. With the excessive burping and heavy feeling, it could be gallstones or issue with your gallbladder. If you notice pain underneath your right rib, make an appointment for an upper GI.
It's probably ur organs making room for the baby. As ur baby grows, ur organs literally reposition themselves to give it room. Idk for sure but that's probably one thing that it is.