Very important question for pregnant ladies!!!

Does anybody know why my toe nails have turned yellow😦this didnt happen to me till i got pregnant im almost 28 weeks now and i hide them in socks👌i run on 0 energy and just been to lazy to go to a foot clinic but i asked my o.b doctor & she acted scared to even look at them😐has this happend to anybody else why pregnant???!!!im annoyed and a bit embarressed about it😕someone if you know or been threw this can you explain and give me a home solution!!!!!!!! Thanks in advance