so scared of third trimester please help!

I am 2 weeks away from my third trimester but I am experiencing all of the symptoms already. Terrible back pain, feel like my belly is going to burst, zero energy, anxiety, can't sleep well, pee all the time, heartburn etc. idk how I will make it another 3 months. I'm starting to worry a lot and become stressed. Please leave any kind words of wisdom. I just can't see the light at the end of the tunnel right now.