Use non-toxic soap and shampoo. I don't know where you live, or what is available where you live. A good brand is Neways, but it is expensive. There are less expensive alternatives.
Keep looking for the answer.
Do you eat a lot of salad? Salad is different from cooked vegetables.
Do you have a fairly healthy Diet
Do you experience constipation?
Smells can be worse then the body is acidic. You could try alkalizing.
Don't do anything too radical while you are pregnant.