Sakit ari-ari yang teruk memang boleh jadi placental pain or round ligament pain, a few of my mum friends experienced something similar tengah pregnancy and it was scary jugak, especially first time, tapi since you don't have bleeding, contractions, or leaking fluid, it's likely bukan emergency. Lepas ini you should see your doctor or midwife soon to check everything is okay and get proper relief, sebab jalan pun susah ni memang affect your quality of life and they can assess properly. Hang in there, mama, first pregnancies always feel a bit extra worrying kan!