could I be pregnant??

I am adding this anonymously because there are people on her I know and don't want seeing this but anyways... me and my boyfriend had sex a few times and 2 times he came inside me and today he tried to pull out but didn't in time so some got inside me. I have missed about 5 or 6 pills on this pack I took them super late and one time it was so late so I took it the next day. And all my other ones I took but it was super late so it counted it as missed. I have been having cramps and feeling like I am going to throw up but not actually throwing up. I know super irresponsible of me. I am suppose to get my period in about 3 days. But I just want to know if I could be pregnant or if I should take a test?