Here we go again

Just when I had reached the point of being okay with being done, we're pregnant.  No interventions and no trying.  We are an infertility cliche and I'm in shock and terrified.  I want to be excited and happy, but it's so hard.  This is my third time conceiving naturally and we all know what happened the first two times.  We know I have shitty eggs and that my RE wasn't optimistic for us conceiving a healthy baby again even with interventions.  So I know how this will likely end.  But today I am pregnant and I love this baby SO much.  Please, God.  Please.