Unprotected sex

I’m 15 and I had unprotected sex a few weeks back , he says he pulled out but I did feel something go in me and then him pull out. I’ve been very bloated and have had abdominal pain which ends up going away, my breast have been extremely sore my appetite has gone up so much I eat a lot more and I’m a few days late on my period which never happens ,I’m scared to take a test but could I be pregnant ? + this guy recently got a gf so if I was pregnant I wouldn’t know how to tell him please help me