Labor scare 😰😧😧😧😧

On Saturday I woke up with brown/pink discharge and really light cramping. It was the day of my shower for my mono-di girls so I really didnt want to go to the hospital but I didn't want to take any chances. I got there and they admitted me to check for labor. They checked my cervix and I was 1-2cm dilated and 80% effaced. I was not having any contractions though. They immediately started magnesium and have me steroid shots as well as the shot for being negative blood type. Needless to say my shower went on without me (i got lots of pictures). Sunday I was examined by my high risk doctor and he said my cervix which had been 4cm was only .83 cm. Also one of my girls is smaller than the other and I have extra fluid around the smaller baby. They thought it was diabetes so I was given more steroid shots and my sugar was monitored. Monday I found out I do,not have gestational diabetes and my cervix had gotten longer (1.3cm). They released me with bed rest and sent me to a specialist to see if my twins have tts. The specialist rulled out tts but my smaller baby may have esophageal atreasia. She's fine as long as she stays put but because esophageal atresia causes a buildup of amniotic fluid it can cause labor to start early. She will need surgery after she is born to correct the issue. I'm so scared all the time that I'm going to put myself back into labor by doing little things like going yo,the bathroom. I'm staying horizontal as much as I can. I'm 27 weeks and I want to keep them in as long as possible. Any one have any similar experiences?