Oo mama, ako din nag-experience ng ganyan around 28 weeks kaya nakaka-alala talaga! Usually it's just the ligaments stretching or Braxton Hicks contractions, lalo na pag matagal nang naka-lie down, pero better check with your OB to be sure especially if it's sharp or accompanied by spotting. What I did was try to shift positions every few minutes, use a pregnancy pillow, and honestly just rest as much as I can, pero yan lang personal experience ko! If the pain gets worse or you feel anything unusual, don't hesitate to call your doctor na, hindi worth the stress and peace of mind is priceless. Hoping it's just normal pregnancy stuff lang!