Heat Advisory and 27 weeks pregnant

Nakita • 30 years old, Married Baby 1- June 2015, Baby 2- October 2016, Baby 3- March 2018! Baby 4 October 2019

I work in a warehouse that's usually 10-15°hotter inside then out. It's a very physical job We have a major heat advisory for the next two days. I'm in Canada and the temp is expected to reach 104°f, higher in other areas. Should I just call into work today? I always feel bad for calling in but are there not major risks for working in this heat while pregnant?