first wic appt, pregnant and toddler, what to expect?

it wasn't easy even getting an appt! their phone always wnt to voicemail and then they took over a week to return my call. but our first appt for my pregnant butt and my 18mo is on Monday. they said it would be about an hour (so I'll bring the good toys 😂) annnd they said all I would need was our Mainecare cards bc that counts as our proof of income, an ultrasound or other proof of pregnancy, and obviously IDs (her social security card?) I will probably bring one of hubby's recent pay stubs just in case since he is the one who supports us all. but what will they do at the appt? is it like a physical? weight, blood pressure? I have anxiety (especially with anything even remotely medical) so knowing EXACTLY what to expect is helpful.