Girls, please tell me, have you ever experienced constipation in newbo…

Girls, please tell me, have you ever experienced constipation in newborns from month old? How long does it last? Did they find the cause? We're currently one month and 19 days, two weeks without glycerin candle in the toilet we don't go. I understand that on breastfeeding it's normal, but the baby is restless (he cries, presses his feet sometimes, he poops and immediately starts crying), so it seems like he wants but can't. I do massages, I try to stimulate everything to no avail. I don't understand what caused this for a month everything was great (several times a day I went to the bathroom). My diet didn't change, I didn't follow any diet