I am 24 weeks pregnant and just finally starting to show. I am very active and fit.

Today I went to the grocery store to buy dog food. I have 2 large dogs (Mastiff/Great Dane/ Boxer Mixes) and a Basset Hound. So I loaded 2 50lb bags into the buggy, along with a 22lb cat food bag.

At the register, the cashier couldn't find the barcode to scan, so I flipped one of the 50 lb bags upside down for her.

She then proceeded to lecture me about lifting while pregnant. I explained that it's not heavy for me. I don't lift anything more than I feel I can handle. I'm not stupid or reckless. I think maybe I offended her because she was clearly not an active and fit person and 50lbs would be too much for her. She continued to berate me and even pulled other customers and cashiers into the conversation.

So I ask, WHAT defines heavy lifting? Is there a set weight limit or does it vary by what a persons fitness and comfort level is??