You should be fine as long as you responded with enough evidence and followed the instructions in the RFE. It should take anywhere from a few days to 90 days to get a response. Please keep in mind that an RFE isn't always a bad thing; in fact, it's more like a second chance to tell USCIS why they need to approve your petition. Some people don't even get an RFE; they just get denied. Good luck!