Cramping

Hi All! Found out I was pregnant this morning! And after doing 4 tests I think I've finally got my head around it!! 😀👍🏽 just a question though I'm having cramps, similar to period cramps but it almost feels like I'm 'stretching' if that makes sense? My womb feels 'heavy'! Just wondering if that's normal? I'm very early about 3 weeks 4 days according to glow ☺️