need advice

me and my boyfriend had unprotected sex on day 15 and 16 of my cycle.which was 8 days ago . 2 dyas after that I started feeling sick and that lasted 5 days ago and then for the past 4 days my boobs hurt super badly and they are very swollen and tingly . during the time we had sex he did pull out . could I be pregnant or is this symptoms of my upcoming period?