Eggs and cholesterol?

I was eating 2 eggs every morning, because a nutritionist put me on a certain diet (since I have had very weak muscles after an accident with something, and she wanted me to have protein). And, after speaking with her, I was convinced that it wouldn’t hurt my cholesterol. Now, my cholesterol is high and it was perfect before. I never had a problem with cholesterol before this. Is there a good possibility that eating these eggs every day (for 9 months) has caused this increase in cholesterol? If so, can I lower it back to normal by simply stopping to eat them and eating more oatmeal?