Aw, first-time preggy concerns are so real! Right side pain around 23 weeks can be a lot of things, ligament stretching, baby's position, or sometimes just how your body's adjusting, pero honestly, I'd really suggest you check with your OB about this one para ma-rule out anything serious, kahit slight lang ang pain. One of my mum friends had similar complaints at that stage and it turned out okay, but better safe than sorry talaga, lalo na you're an FTM and gusto mo peace of mind. Keep an eye din if it gets worse or may ibang symptoms, then go agad-agad na sa doctor! Congrats on your pregnancy though, mama!