Hi and thanks for using the forum.
The symptoms you describe are pretty typical for a woman who is 35 weeks pregnant. As your baby grows, there is less and less room in your abdomen. This can cause you to experience heartburn and can also make you unable to tolerate normal sized meals. There are over the counter medications that you can take for the heartburn (pepcid, TUMS) but discuss them with your doctor first before taking them. Also, it sometimes helps to eat frequent small "snacks" as opposed to 3 meals a day.
Your growing baby also makes it harder and harder to get comfortable to sleep. Try laying on your side with a pillow between your knees. This can take some of the pressure off your back and chest area.
Those last 5 weeks of pregnancy can be hard and they always seem to drag. Be kind to yourself. Relax whenever you can ( maybe a pedicure or a shoulder massage?!). YOu are almost there and very soon you will be holding your little one in your arms. Good luck. I hope you have a fast and easy delivery.
My daughter had the same complaint and our doctor told her to take a spoon of apple cider vinegar just before eating. He said her symptoms were caused by insufficient stomach acid, which is why she felt so full, and not the reverse. You might try the vinegar. It won't hurt you and, if it works, it will work immediately.