Working out sucks now (?) :(

15 weeks pregnant and working out just sucks. My sister says the fatigue will ware off but I'm doubtful. I used to love going to the gym now I drag my feet. I don't know who I am. I do it because i should and I figure it's just gonna get harder. How have you dealt with this? Mindset shift or new hobbies (besides yoga) thats helped you stay active. I used to love walking my dog but I find that a drag as well ( I still do it reluctantly) I just miss loving my active life and now I feel like a stranger in my own body.

This is my first baby ♥︎

Edit: I know i need to keep up with the gym since I'm eating way more on a regular basis. I really don't wana get huge or have a giant baby