breathed in fumes - really worried! :(

I have just cooked dinner and noticed a burning smell. I checked everywhere and couldn't figure out where it was coming from. After about 5 mins of smelling it I opened all the doors and windows and later found that the plastic handle on the pan had burnt and gone slightly black. I have since had all the windows and doors open but I am petrified because I am almost 12 weeks pregnant and so worried the smell would have harmed the baby. Can anyone advise me and tell me will baby be ok? I am so worried. Thanks in advance.