How bad is the TTC subway?

I am pregnant and need to start commuting to work downtown from Oakville. I plan on taking the GO for most of my trip but then need to hop on Line 1 for several stops. I’ve spoken to a few ppl who are adamant that I shouldn’t be taking the subway at all due to the amount of homeless people and people smoking drugs/using needles. Should I change my plans? I wasn’t planning to take Uber as it’s not in my budget but I mean I will if my safety is at risk. What is everyone’s experience during regular commuting hours?