During the last few weeks you do tend to feel breathless and this can cause difficulty on swallowing as well. When we breathe we cannot swallow or speak. So if the body is still trying to catch up on breathing and you eat it tries to stop the swallowing to get the oxygen. It's a natural reaction. Try softer foods and eat slowly.

It maybe acidity. At this stage it is common. Eat light and drink lots of water.

no I don't have cold nor cough

do you have cold and cough ?