There are two things you may want to consider.
1) When in doubt don’t do. Meaning that if you feel like it may be wrong don’t go ahead and do it. Many times when we go against or better judgment we regret it later.
2) Call your dentist that did the extractions. Find out what they think about you eating rice krispees. A phone call we only take a monet of your time and you will get the advise you are looking for .