No symptoms? 😣

Hello mummies, I'm currently 4 weeks 5 days and so far I've not had any symptoms except extreme fatigue, bloating, occasional light cramps on the left and right side and sore breasts that have slowly started to go away.. should I be worried? I've officially missed my period. Why haven't I got nausea or lower back pain like other pregnant women? Of course I don't wish the pain upon myself but I haven't gone to my 1st ultra sound yet as it's too early and it's hard to believe that there's a tiny baby in my womb. Is my baby ok?! 😪#pleasehelp #firsttimemom #advicemommies