dont know if they are signs

Ok well I haven't had a period since July 8. An I've had unprotected sex since then had sex again on August 5 an he came in me on purpose. Its been 2 weeks. And Im having abdominal cramping, discharge sore nipples sharp pains low back pain an my ribs feel like they are being pushed out.. I've been nauseous too... does this sound like early pregnancy please comment an help me.