Can dreams mean something ?

Me and my boyfriend have been struggle with getting pregnant since last year due to him having cancer 10 years ago . Turns out we need to do IUI . But a couple months ago I had a dream that my mom was holding my baby in the hospital and it was a girl . My mom passed away 3 years ago . Does anyone believe that dreams are signs ? . I know it sounds crazy but I have this crazy feeling I won’t need the IUI despite what doctors say . I keep praying and praying to god every night . I just need a miracle