Pregnant

Hi, I actually have a question with Shann: am I pregnant? I was with my boyfriend last week and we had sex on the first day of Christmas. I feel nauseous, have trouble with a lot of food, and need to go to the bathroom often. I'm also very tired because I haven't had my period this month. Usually, I get my period around the 20th, and now it's the 27th, so I'm going to take a test next week. Greetings xxx