The two week wait.

Ever since yesterday morning I have been experiencing really bad fatigue and nausea. I'm not sure what is going on. I'm 7 dpo today and me an my husband have been TTC for almost 5 months. I also have noticed that my boobs are really tender and heavy especially when I get out of bed in the morning. Another thing I have noticed is that there are certain things that just the smell of the will make me feel nauseous. Any ideas ladies?