Are you pinching up a hunk? I posted a link to an excellent visual for sub-q
injections so you can take a look at that and see if it's what you are doing...
Also, are you using an autoinjector? I inject straight up and find it less abrasive. Rebif has a super thin needle, the thinnest of them all possibly.
The red silver dollar size mark is common and they fade away, but will come out after heat from sun, shower, etc. But, and should only feel them if you press on them.