Sore breasts & flu like symptoms... Pregnant!?

Yisel
So I woke up this morning feeling horrible. Runny leaking nose throat hurts and my breasts are sore on and off through out the day. My fiancé and I are TTC for baby #1 I'm at 3DPO cycle day 19 I'm not suppose to get AF till the 12th is it possible that I could be pregnant?