Keep your back straight and avoid slouching, simple. Use a small cushion for your lower back and keep your feet flat on the floor, don't cross your legs as it messes with circulation.
Honestly, sitting in any position feels like a task right now in my 3rd trimester. For the 2nd trimester, just sit comfortably with a pillow behind you, and please don't sit in one spot for hours like I did!
Using a support cushion really helped me when my body felt tired. Also, make sure you don't miss your thyroid tests and regular doctor checkups because fatigue can sometimes be linked to that too.
Sit straight with your back well-supported, it keeps the baby comfortable too. Keep your mind calm, listen to some peaceful mantras, and take care of your health.
I am still trying to conceive, but my bhabhi used to sit with her feet resting on a small stool. She said it helped her avoid swelling, maybe you can try that too.
