Over thinking? Dirty Dishes

I went Over to my sister’s house tonight to help her with her household. She’s been having some really bad depression lately so I understand that she needs help and I want to be there for her. I offered to do her dishes. The dishes in the sink have been there for over two weeks. They smelled so bad. I took me almost an hour to get all of the dishes in the sink and on the counter done. I was breathing in like an eggy sulfur moldy smell I tried my hardest not to. Now I’m scared that the smell will affect my pregnancy and baby. Should I be worried or am I over thinking? I’m 13 w pregnant. Also, now I can’t stop coughing :/ maybe the soap?