Mama, please check with your OB agad, especially since you're 22 weeks pregnant na. White particles or discharge changes during pregnancy can be normal, but better safe than sorry, kaya kailangan i-check ng doctor para sure. Wag mag-alala muna, maraming bagay ang nagbabago sa katawan natin during pregnancy, pero sila lang ang makakapagsabi ng tama. Pregnancy is special, you're doing great by being observant! Let me know what your OB says, ha?