In the Subway

Yesterday, I took on the subway to go back my home yesterday.  When I had a was seated there, one a young woman came appeared in front of me.  I thought she was pregnant because she had a big and wide belly and was wearing in low shoes. I wanted to be civic minded and let her have my seat. to help her to take it more comfortably. So, I told her said, 

"Please sit here".

But she was embarrassing She looked embarassed and then asked, me

"Why? Do You getting out of the next station/stop?"

I said

"No, Aren't you pregnant?"

She became irritated at my answer and retorted,

"I'm not!"

No sooner had I done my answer than she was irritated " I'm not pregnant"
After undergoing this incident From now on, I resolved will not to give away up my seat to big belly fat women!

I would want to say something but since you wrote it this way, that fat assed is rude.  She should have said, "Thank you.  It is very kind of you.  I can stand."  This is what I mean by "One rotten apple spoil the bunch".