Uterus cramping around 4-5 weeks. Sudden. On and off. No other pregnancy symptoms so far.

on my second pregnancy now (yet to see gynae - but going for Poly referral this Fri). i'm actually worried on this issue as well. there's still cramps here and there and bloated. for some reasons i don't feel as nauseated as my first (i do feel it on my throat but i just feel like it isn't(?)). no sore boobs too - unsure if this has to do with breastfeeding (only felt sore early in the morning like 4+am and not sure if this justified). i hope our pregnancies have a smooth journey. pray for me too!