I'd say that for most people, no. They don't have abdominal cramping prior to finding out they are pregnant. They may have some mild period like cramps in early pregnancy but what you describe sounds more like your period coming. See if your period shows and go from there. good luck
I had cramps before i found out i was pregnant, but they were very specific and unlike period pain. They were sharp twinges that lasted longer than could've been implantation, i would say about 5 or 6 days. On day 7 i got my bfp, two days before my period was due.
That said, our bodies are funny things, it could be ovulation, constipation, or something else entirely! :)