I use a douche for the first time and on the same day i had unprotected sex now 4 days later i got white itchy spots. could i have and std or a yeast ?

You could: It is not feasible to provide a meaningful opinion without examining you and your symptoms warrant evaluation by a physician. If you do not have a personal physician, please seek care at your city of count health department. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Drink enough water daily so that your urine is mostly colorless. Practice safe sex. Get HPV vaccine.