Oven had rubber burning at the bottom... 26 weeks pregnant

Okay! So I’m crazy. Well my husband made me call doctor about this and now I’m freaking out. We had our oven fixed today because for past few weeks when we would turn on the bigger side of our oven, it would make a crazy smell. Sometimes we would turn it off and stop cooking and other times we would avoid this oven altogether and use the smaller oven. Well now I’m googling and everything I have read about burning plastic and rubber is super unsafe for baby. I