Hey I Am A Bit Concerned That I Might Be

Hey I am a bit concerned that I might be pregnant...ok so my last period was on the 19 of December but I had protected sex on the 4th of January that's around my ovulation time my partner didn't break or anyting ..but on the 7th I began bleeding and getting belly cramps and it's the 9th and I'm still bleeding and gettin cramps...could I be pregnant? ????