FTM 29 weeks and I feel good

Hello everyone,

I am currently 29 weeks and around 27 weeks I started feeling great, before I felt decent but now I just feel like 9/10 😭🤣 don't get me wrong I have terrible heartburn and my boobs hurt terribly, I am currently working, exercising, meal prepping and basically back to doing what I was doing before pregnancy. Baby is kicking a lot too, my question is when can I expect to feel bad? Or what should I expect in the upcoming weeks? I get worried that maybe I should be growing more or something but doctor has measured fundal height and so far so good.