People are rude!!

I am always very considerate to other people when I'm out... moving aside for the elderly, pregnant women, children, etc. Today I was out grocery shopping, and people were so rude! I'd be stopped picking out produce, and they'd be really close up behind me or in front of me until I moved out of the way!!! It's not like I was taking up the whole isle, but I was getting dirty looks like I should get out of their way! I kept having to move my cart out of the way and then move it back while other obviously not pregnant people stayed put. I guess I don't get any consideration anymore? It was mostly older people doing this, so I was a bit shocked. What happened to manners?!