Having a hard time getting down liquid I had a ice pop and some vitamin water but feel very full. Is this normal?? My doctor put me on a all clear liquids for the first

This is the worst of it, it only gets better from here. Just keep trying and gradually you'll get more and more in. By day 3 I couldn't even get a full water bottle in a day.

This is very common, it is most likely resulting from the swelling inside your esophagus and stomach, the one good piece of advise i can give you is try drinking something warm, the warmth will help reduce the swelling, drinking cold things at this point will be very difficult until the swelling goes down. Good Luck.