Did anyone noticed this or i'm just overthinking

Hi i'm 10w4d pregnant and i have this rubbing belly habit since 8weeks of pregnancy i literally rub my lower abdomen 3 4 times in day and at sleeping time so today i just noticed that my lower belly getting harder then before and i was omg whats this ( i totally forget i have growing baby inside šŸ˜‚) may be because my 1st trimester is going to end in few days i felt so.