why does everyone take pregnancy for granted?

everyone unless having had a loss assumes pregnancy means baby. I got those two positive lines back in July and by Oct at 14 weeks and a day when I was supposed to be Safe my baby's heart stopped!!! I had to give birth in the most inhumane way and now EVERYONE around me is pregnant!! Two months of trying to conceive with nothing and af due in two days with bfn on test this morning. looks like I am out again.