Hi there, I know exactly how you feel. I am 22 weeks on Sunday and this is my 4th pregnancy, but my first to last more than 6 weeks. I ain't showing very much either but I can feel the lil thing move all the time which makes me feel much better. I don't even know the sex of my baby yet and won't for another 2 weeks. I am just like you and want to start buying thing but I really want to wait til I am more like 6 1/2 months just to be more safe because thats when they start to see you more often. I am sure everything is ok. Try to relax and just think..We will be holding our lil ones in June. My due date is June 1st. Good lucka dn keep us posted on how things go..Good luck o your Aunt too!!
Im not sure with twins but it is possible just not likely to miscarry past 12 weeks. There is probably more risk with twins. Im sure your baby is going to be just fine. What you need to do is try to relax as much as possible so you don't put stress on the baby. I wish you and your hubby's aunt the best of luck!