29 week symptoms... normal?

I had an apt today and I lost 5 pounds since last week. Doc said this can happen and not too alarming. Only diet change was that I cut coffee with cream and sugar out this last week because I was having higher BP at apts which I think was due to anxiety. I also feel like I might have palpitations every now and then and that depending on my position it can be hard to breathe... I know I also look into everything very in depth... maybe I’m too aware of everything... normal ?