Bathroom Fan Change Gone Wrong

Need help! I was replacing a bathroom fan, and when I cut the cord leading to the fan, the power was cut to two other switches in the bathroom. I put it in the new fan, still no power. I reconnected the original fan, no luck. Checked - no current flowing into eitehr the cable or the light switch that controls the fan. I have 4 switches connected to the same fuse line, and 3/4 are not getting the power, but 1 is working fine. Any ideas where I went wrong?