I had sex with my boyfriend on the first day of my period, right before the blood actually started coming. (Which was 9 days ago, and had my period for 4 days) with zero protection, he came inside me and now I'm starting to feel symptoms of abdominal pressure/cramping, slight nausea, headaches and moodiness/irritability. I feel bloated and huge. My breasts don't feel sore as of now but it may be too early?

Is it possible that I'm pregnant? I think its too early to start feeling these symptoms of pregnancy?
When can I take a pregnancy test? I'm 25 yrs old and I just want to know if I am or not.