From a friend! Is there need to worry?

I’m just kind of worried so I got my labs done on Monday and my hcg levels came back at 1,959 which told us how far along we are but when I get it done again on Wednesday my hcg only went up to 2,186 it didn’t double so yesterday we had an ultrasound to rule out an ectopic pregnancy and it wasn’t that thankfully! We got to see our 5 week & 5 day baby that had a 108 heart beat and healthy normal everything but I did another hcg test today and it only went up to 2,360.. the second beta went up 227 and this one only went up 174 should we worry? Or did you experience something like this?