When people don't understanding fasting, they will do what is natural, push you to eat, because they aren't educated in the process of a fast. Many people thinking that a body can't suffere the rigors of living of water or even juice. They think you have to have solid food in order to survive.
The pressure can be unbearable to the point which a person might break their fast.
I try not to tell anyone if possible. It must be much harder if you have a family and/or husband. I have either, so I don't have to hide much unless I am over and a friend's house and they try to feed me.
I hope you can withstand the pressure and if you do need to, break your fast correctly.