Is this what PD feels like?

I'm 66 and newly diagnosed in August. I've been having fasciculations throughout my body, even my scalp, and I'm finding it more and more difficult to walk. I used to walk 4 miles in just under 60 minutes. Now it's taking me longer than that to walk just 3. When I get about 100 yards down the road, it feels like my thigh and glute muscles get tense and my left knee doesn't want to bend. My muscles feel soooo tired 😫
Is this common with PD? I'm not on any meds except Ropinirole XL. I just want to know if this is what other people with PD also feel so I can figure out how to manage my walks... Thanks for any replies.