Hi, I had unprotected sex on Monday January 2 and took Plan B on Wednesday January 4. I have been eating unhealthy recently (a lot of bread), but whenever I have done this I have never gained a huge amount of weight in a week, 5 lbs at most usually and I can easily melt off the weight gain. I have gained about 8 lbs in this short amount of time and I have to pee a lot and the symptoms of Plan B are so closely related to the symptoms of pregnancy. As a doctor, I am asking you what does a pregnant woman's early symptoms feel like that is different from Plan B that patients have told you.