Oo, normal yan, mama! A few of us mommies experienced the same thing during pregnancy, it's usually just the baby moving around or sometimes Braxton Hicks contractions (practice contractions), lalo na at 6 months ka na. Since walang pain though, that's a good sign, pero para sa peace of mind mo, better check with your OB sa next visit para sure lang, especially if the twitching gets stronger or if may accompanying symptoms na.