i went thru this a while back. i couldn't/can't take phenergan as i can't function. however, for several days i took a med that the dr gave me called tigan (i believe). it was great. after that time, the nausea was gone and has been fine since. it felt as though it relaxed my entire body, including tummy.
maybe you could visit the dr and talk about this?
gl!
kd