Dog in heat, bad smell

This is really gross but I've never had it happen before with any of my dogs til now..she was in heat and I don't think she's bleeding anymore but her crotch smells absolutely TERRIBLE. Like rotten fish x 20. It's so bad my hubby and I can smell it without even being near her. I gave her a bath and it still smells. I made sure I washed it really well. I'm not sure what to do. I don't wanna bathe her too much cuz I know that's not good for dogs... Anyone have any ideas? Should I be taking this smell seriously and get it checked out? It makes me wanna get sick. Please don't be rude..I'd appreciate any suggestions or ideas.