Could I be pregnant?

so during my ovulation timeframe me and my boyfriend had sex with a condom but we both think it broke. I'm on the pill but I had missed a day but did what my doctor said and doubled up the next day. a few days after that I went to the doctor for a new pill pack and they did a urine test and everything was fine and they didnt do any blood tests be cause I wasnt concerned about the chance of a pregnancy. Recently however I have been nauseous and dizzy and my breast are swollen and a few other possible symptoms have come up. My period was supposed to start a few days ago but it hasn't however my doctor told me that since my period came half way through my first pill pack that my period could come twice or only one at the end of this pack. should I test or just wait it out?