need advice

i’ve been taking birth control since maybe november, i had unprotected sex in early december but he didn’t cum in me. i can’t tell if i’m overthinking or these could be early signs of pregnancy. i has skipped my placebo week the first couple months and took it for the first time at the end of december/beginning of january but didn’t bleed at all. and i’ve had weird cramping the last couple days. i don’t know, i can’t tell if this is just my body getting adjusted to being on birth control or something more. im going to get a test tomorrow but would really appreciate other people’s input.