Looking for support

Hi! My name is Mishel. And I am 13 weeks pregnant. This is our second baby. Unfortunately, the first one, our daughter, passed away just 36 hours after being born. She was a premature baby, born in 35th week. She was fine weight vise (6.5 lbs) and it was a c section delivery. It will be a year on 1st April, 2016. And I have already conceived. I am just worried that I might have another premature birth because everyone keeps telling me that the uterus gets used to pushing out the baby too soon if we conceive in less than a yr. I'm terrified and full of fears at this stage. Please advise