12 weeks 5 days mono/di twins

And I feel huge! I am so excited for these babies it’s just unreal. But I am also so worried about what this is going to do to my 110 lb 5’1 body too. Of course I’ll be over the moon no matter what to have 2 heathy babies and me healthy once I have them. But, still wondering if anyone has any advise on how to take care of myself and my belly during this pregnancy? Does anything really help with stretch marks? Do the belly tape bands that hold up your belly help a lot? Are they worth investing in? Are there any stretches? Or certain positions that help with comfort? I’ve had 3 singletons. Never really started showing until 6 months. Didn’t really get uncomfortable until the last month. But I’m just 3 months in and so uncomfortable. Any advise or suggestions are appreciated!!!