Always out of breath🥵

Currently 19 weeks and I’m ALWAYS winded. Anyone else? I could be laying down sometimes and still be out of breath. I walked down two isles in the grocery store and needed a break😂 my dr said if im not having chest pain then it’s fine. This is however my second baby so I’m not sure if maybe everything moved up quicker or if it’s me being in 100 degree Florida heat but I didn’t have this issue so early on with my son😅