Does anyone know if any serious side effects will occur as a result of the aveeno mosturuzing lotion being placed intravaginally?

See below. It depends on the circumstances. If you did it once, it should not have any effect. If you did it and had sex with a condom, the condom would have become ineffective. If you need a lubricant, use a water based jelly like K-Y jelly.
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.
Get HPV vaccine.