Helpful advice please

Im not sure what to do my spouse who is pregnant keeps putting me down and itmakes me feel not enough to support her emotionally and physically I understand its her emotions and hormones flairing but no matter what i say or do for her she instantly gets upset and blows up wether it be helping or trying to help I feel its a communication thing and when i attempt to address it we bicker and if i stay silent she thinks im not intrested or I dont care when in actuality im trying to let things be please give me helpful advice