How do you fix feeling fatigued and weak? How do I alleviate this. Ugh. I feel like the beginning of…

How do you fix feeling fatigued and weak? How do I alleviate this. Ugh. I feel like the beginning of my first trimester was such a breeze I didn't even know I was pregnant. No sore boobs, throwing up, nausea, weakness etc. why does symptoms want to pick up now. I'm starting to feel weak and exhausted and everything. I want to fix this.