Pregnancy worries

Al

Second pregnancy and seems to be much harder . Constantly out of breath and feels like my hearts going to burst out of my chest . Don’t know if it’s breast pain / discomfort or actual chest pain . I’m still bf my almost 2 year old . I also don’t eat the best I eat very greasy fatty foods . My arms and legs are constantly numb and tingly sometimes even ache . Anyone else dealing with all these same things ?