Bonding with baby..

Although my pregnancy was planned, it was a big surprise because I got pregnant first month trying. I had absolutely no doubt it would take us a long time ttc. Now that I am prego I feel like I am having trouble bonding with baby. I'm so concerned about other things such as finances, etc. so stressed out. And I feel like this baby is just an abstract idea. Like a dream. I want to bond with and love my little growing baby but I don't know how/where to start. I tried giving a nick name but I couldn't attach the name to an idea in my belly if that makes sense so that didn't work. I'm a first time mom. Any advice? Btw I'm 11 wks