Anyone else Short of breath? I am 35 weeks

Jodi • I am 36 yrs old, with a surprise 2nd pregnancy!
I have been feeling a tightness/like something is sitting on my chest feeling lately, and it comes and goes, but I will also feel very short of breath at the same time. It can be hard to talk even...and I felt my pulse while feeling this way and it seemed very fast. Anyone else have this problem in the 3rd trimester?