Two nights ago, I woke up very thirsty. I walked into the bathroom, without turning on the light, and picked up the bottle of hydrogen peroxide instead of the bottle of water that I normally keep there. I took a large amount before I realized something was wrong. I immediately turned the lights on and drank water. Then I went to the kitchen and found some plain yoghert to eat. Later I vomitted and started feeling better. However, it is the second day and I am not feeling well. I feel a lot of pressure around my eyes, and generally feel weak. Any suggestions about what I have done, and what I should do?