I accidentally swallowed a cherry seed. is it okay?

Okay: It will not do any harm. It will pass in stool in a day or two. 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. Drink enough water daily, so that your urine is mostly colorless. 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. Practice safe sex, if you have sex.

Odds are that it: will pass right through you with no problem. Did you know that in order to germinate, a cherry pit needs to pass through the GI track of a bird first.