Mama, please don't wait until May 31, please call your OB today or go to the nearest hospital/clinic to get checked, okay? Right upper abdominal pain in pregnancy needs proper assessment, hindi dapat i-guess-work lang lalo na may stretching at burning sensations pa. A few of us mums have had similar concerns mid-pregnancy, pero importante talaga na ma-rule out kung ano ang exact cause, could be ligament pain, pero kailangan ng doctor para ma-confirm. Preg does weird things to our bodies, pero better safe than sorry, especially at 23 weeks pa lang. Let me know how it goes, mama, sending you strong thoughts!