Ahhh I remember this stage with my first baby, so stressful kan! At 1 month+ it could be a growth spurt but honestly at this age banyak faktor, sometimes it's just their way of adjusting to the world outside, or they could be uncomfortable even though everything seems okay on the surface (digestive aches, reflux, etc.). The wanting to sleep on your chest is very normal, depa rasa comfort and warmth je, bukan necessarily something wrong. Growth spurts kat newborn stage biasa la seminggu dua, tapi kalau dia constantly in distress like that, better you check with your pediatrician to be sure nothing else is going on, especially since dia crying sampai almost lose his voice, depa boleh check if there's any underlying issue. Hang in there, mommy, first month is the hardest!