I am now 27 weeks and my 2 girls are measuring about 2 weeks apart. Throughout my entire pregnancy one girl has been smaller than the other and they never thought too much of it. Now, since the difference is much bigger then I am going for Ultrasounds twice a week just to monitor. The doctor told me that she doesnt think too much of it, but would like to be cautious.
Ask as many questions as you'd like. I use to be the same way, till I realized that I needed answers. The doctors are the best people to answer them. Unfortunately all the forums can give you is personal experiences. Yet your doctor knows your history and your babies, therefore they will be able to give you a better answer.
Good luck.
My daughter had triplets in feb baby always was behind they were born at 30 weeks baby B was 1lb 15 oz and C was 2lbs 12 oz and A was 2 lbs 13 oz so B was much smaller they are now 6 weeks and A is 5 lbs 9 oz C is 4 lbs 11 oz and B is 4 lbs 2 oz so its very normal and they can eventually catch up
On my first ultrasound the difference between two was 2 days . In my 2nd ultrasound it was 1 day so I think it its just normal. Nothing to worry about. It changes all the time because doctors only estimates the age so dont worry.
2 days is not big. Mine always measured apart after 7 weeks. At 35 weeks the girls head and tummy were over 2 weeks difference!
Try not to stress a lot about it. I'm 24 weeks and my baby girl measures 5 days behind my baby boy, so your hubby might be right by saying the small baby is probably a girl, LOL. Everything is well with my twins and my girl seems more active than the boy, Take it easy and enjoy them.
I wouldn't worry about a 2 day difference, esp since your doctor isn't worried. Twins will not always measure the same throughout the pregnancy. I am pregnant with twins and had one measuring 2 days behind around the same time. I am now 16 weeks and they are both measuring together, but like I said...2 day difference isn't going to worry the doctor and you shouldn't worry either. On the iron pills, my doctor put me on iron pills as well when I found out I was expecting twins. Its normal and most likely you will be put on a higher dosage of folic acid, as well. Just try to relax and stay stress free! I know its alot easier said than done...I have to tell myself that daily. :)