implantation

shayelee • my names shayelee i currently have two children 5yrs and 1yr from a previous relationship me and my husband have been together two years and we have been ttc for the past 3 mnths
i see all these post about implantation bleeding but what are the stories without the bleeding! ive had cramps and stomach pains and burping with some vomit like crazy for the past couple days is this a sign?