10. Thrush

Source: Amazing Smiles

Is a yeast infection caused by Candida Albicans, a form of fungus that is usually harmless and lives on the skin, mouth, gastrointestinal tract, reproductive organs of healthy adults without causing any harm or symptoms. 

Due to pregnancy, hormonal changes in the body causes the fungus to begin to grow and cause itching and irritation in the mouth, around the vagina, vulva areas, causing soreness and pain during sex or urination. 

If you notice such problem, contact your health provider for treatment.