normal to feel extremely breathlessness?

im in mid 32 weeks now. this last trimester has been super tiring for me. is it normal to feel extremely breathlessness? i tried lying to my sides, sit upright, every position so i can relieve my breathlessness, however nothing works. i just tahan(endure) till i feel better which usually after many hours, and that has been affecting my sleep. my BIL also noticed how pale i got several times bc of this.