Ay, first baby mo, kaya naturally worried ka! But sis, this is really something you need to check with her OB right away, especially with the threatened miscarriage she had, the doctor needs to know kung ano ang nangyari with the pain stopping. Hindi kami can say kung normal or not from here, pero ang galing-galing ay makita agad ng doctor para ma-confirm na lahat okay with baby. Send her agad if possible, or call the clinic para sigurado, peace of mind lang para sa inyo both. You're doing great keeping her safe at following the meds!