Eh, at 35 weeks yang macam tu memang common lah, baby dah besar, pressure kat intestines, so sering-sering perlu buang tapi sikit je, that's normal; tapi kalau ada period pain-like cramps yang nagging or anything feels off, sebaiknya call your gynae je to be safe, especially sebab first baby so boleh get peace of mind! A few of my mum friends kat antenatal class had the same thing dekat end of pregnancy and doc kata normal je, tapi once ada one of them yang turns out ada something minor, so better safe than sorry lah.