missed a period but had spotting half way through cycle?

hello i wonder if you ladies can help me, i have very light periods normally, this month iv been very forgetful and missed a few of my pills, half way through my pack of pills i started spotting for a couple days very light, i thought maybe iv came on my period early from missing pills as i know if you completley stop taking your pill have way through it will normally make your period come early, but i carried on taking my pill as usual. i normally come on my period on the third day of my 7 day break, but this time nothing?
me and my partner have unprotected sex about 3 times a week, do you think i could be pregnant? im not worried at all because me and my partner would be happier either way but thought id ask you advice before i do a pregnacy test