pregnant again?

Mayra
Me and my boyfriend ( 4 year relationship ) and have a 2 year old together. 
well me and him had sex one night and we dont never really use protection so he had came inside me thought i was gonna get pregnant but my period came....... 
  We did it again and came inside me again 🙄🙄🙄 can i become pregnant? Lol im really scared..  😖