Had inflammation w/bad poison ivy rash. redness/inflammation gone now, but still feels like there is fluid beneath the skin. why? how long to go away?

Need to examine: It is not feasible to provide a meaningful opinion without examining you, however, you may try elevating your feet and legs at night to help in draining the fluid, if it is due to fluid under the skin. Exercise may help too. 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.