I'm sure it will be fine Meadows, that's only a tiny rise, but keeping you and your baby in my prayers that the scan goes well. Be thankful for small blessings - tomorrow is really quick to get a scan usually the NHS take weeks so at least you'll have your answers in 24 hours.
ETA: I hit Dr Google so you don't have to read lots of worst case scenarios, but most websites say levels of up to 4 are normal, in the US some websites even say 10! I think they're just playing it safe love.