Hugs to you.
My DS2 had closed fontanelles when he was checked at 2 weeks. I had to get him monitored (head circ etc) every week-2 weeks until he was about 1. It was stressful and worrying and I looked for any issues ALL THE TIME.
Thankfully we never had any issues - I just wanted to reply bc I know how stressful this stuff can be.
Come back after the paed appt and let us know what they say.
Dont worry too much in the interim - i was always told if there was an issue (fluid/pressure in head) you would certainly know about it.