26 weeks 5 days w/Twins, worried about a million things!!

Im 26 weeks 5 days expecting Girl/Boy twins, I also have a 8 yr old son, & a 6 yr old daughter. This pregnancy has been pretty good overall, my other pregnancies were easy, no morning sickness, was able to work till full term, great labors ect. I got lucky this time also & didn't have morning sickness, so far only complications have been bleeding early on due to a subchronic hemorrahage that went at 14 weeks, & Baby A has a marginal cord insertion, so their monitoring her growth closely. I've been working my whole pregnancy up until last week my doctors put me on Bedrest. I'm always on my feet, my ankles & feet have gotten terrible edema, little varicose veins starting on my ankle & the pain in my left foot & ankle is awful so my doctors prescribed me compression stockings to help. Just did the 1 hour glucose test last Friday, & doctor called & said I failed it so have to do the 3 hour one. He said my iron has also gotten too low, & I feel like I haven't gained enough weight, but my baby bump def looks like I have. My last ultrasound at 19 weeks the babies weighed about 1 1/2 lbs, baby B-Boy was a tad bigger than baby A-girl, & they said that's good. Then at my doctors he said that there was a little bit of concern, that the babies were in a low percentile, but then he said he isn't concerned yet, that we will see how their growth looks at the next ultrasound which should be within the next week or two. I'm constantly worried about preterm labor, I've been having Braxton hicks contractions since around 17 weeks, & there getting more & more uncomfortable & frequent. That with the lower back pain, round ligament, rib pains, sciatic nerve pain down my butt & legs is making it hard to do much & hard to sleep. I'm trying to take it easy since they put me on bed rest, but my fiancé works full time, So he can't be home to help me all day, & I have 2 kids. Plus were in the process of moving, which makes things more difficult. I'm praying the babies stay cooking until it's time, praying they'll be healthy, & we still have so much to do & get before their arrivals.