I had a flu since Dec.29th and until now I'm struggling with it , I also lost weight. My last period was Dec.1 and I had unprotected sex, I was expecting my next period on Dec.28 or so but it's 10 days delayed now, I just vomitted this morning, my breathing is a bit difficult and I'm somehow sensitive to the smell of food and I lost apetite. Could I be pregnant in this situation?