Might this be a sign labor isn’t far off?

I’m just past 33 weeks with my second. I’ve been noticing some changes this week. My constipation went away (tmi, sorry) and my heart burn eased up tremendously! I’ve also started feeling the nesting urge, which i hadn’t been feeling before. This morning I noticed baby dropped big time. My belly is so low! And all of a sudden, I can take a full breath. I’ve been exhausted this whole pregnancy. Suddenly today I have tons of energy. Any thoughts? Might labor be coming soon? Has anyone had a similar experience?