So scared of miscarrying

Okay so I know this might sound silly but I found out I was pregnant and then I logged into Facebook to see a few posts about miscarriage. I truly believe the universe uses signs but I obviously don’t want to think like that. Then last night I had a dream that I miscarried, I’m just so scared now since I’m only 4-5 weeks pregnant. My last pregnancy was perfect with no complications so I guess I’m just wondering if it’s likely I could have a miscarriage with no history of complications. Or I guess I’m just looking for encouraging words on how to not stress over the thought of having one.