Hello osheen and welcome to the forum. I would change the oil now, since it is a new engine. Change the filter, too. I change my oil and filter every six months or 3000 miles, whichever comes first. If you rev alot and climb hills and really run it hard, you could change it more frequently.
the oil level in the glass won't change, so don't go by that.
The link below has some great info on engine break-in and basic maintenance. There is some religious overtones and biblical quotes included. If that's not your thing, just ignore those parts.