Please help, need some advice please!?

hi, just wondering if anyone knows anything about early pregnancy symptoms? i ovulated two weeks ago, and am now a few days from my due period. been having cramps for a few days, just niggly ones but woke up feeling queasy this morning, am very tired today and also have a sore chest. am also going to the toilet loads compared to normal. just not sure if these are signs of my period coming or i could be pregnant. i know i could google this info but thought there might be people on here that have firsthand experience, any advice appreciated! thanks xx