Feeling completely run down..

I’m 31 weeks and constantly tired, which I chalked up to just being big and pregnant, but now I’m wondering if I’ve got some sort of vitamin deficiency? I stopped taking my prenatal early on because it literally made me vomit every time I took it (tried gummies, those were worse for me). So my doctor told me to stop taking them, that baby gets everything she needs from me. I haven’t had any issues so far, but now I’m wondering if I need to start taking some sort of multi vitamin because I feel like garbage. Although I haven’t been eating the best lately, my diet has been pretty carb loaded.. I have no energy, nauseated, want to sleep CONSTANTLY..

Maybe these are just normal symptoms at this stage?

Ugh, SO ready to have this baby! 😩