Ay alam ko yan, sobrang hassle talaga lalo na kapag umiikot ka around the house! At 22 weeks, ang hormones mo talaga ay nagsisimula ng lahat ng weird skin changes, kaya possible talaga na rash o irritation yun, especially kung sobrang humid or kung ang underwear mo ay naka-irritate sa area. Pero since it's painful at may swelling, better check with your OB para sure kung fungal infection ba or just regular pregnancy rash kasi may special treatment para dyan na safe for baby. A few of my mum friends experienced similar during pregnancy at after ng doctor visit, sobrang daling ma-manage once na alam na ang root cause. In the meantime, try wearing loose cotton underwear at keep the area dry, tutulong yan sa discomfort!