I'm not sure what's normal as people's experiences probably vary. For me it was a little sore coming back, but like you, I was very nervous upon returning to running so I was hyper-aware of the area. I think running through a little soreness is ok, as long as it doesn't get worse. ITBS pain has a way of building as I'm sure you know. If you have some soreness and it starts to get build or get noticeably worse, I would stop immediately. On your first run, keep the pace easy, concentrate on good form, run on a flat, even surface and keep it short. Err on the side of overcautious. Then strengthen, foamroll/stretch and try to go a little longer the next day. For me this was the formula for beating ITBS, but i'm no expert and i've heard people say they were doing all of these things without much success.
Also, once you get rid of it, maintain the strength work. While foamrolling/stretching can help alleviate issues in the short term, I believe it's the strength training that keeps ITBS from coming back. In general, I think incorporating plenty of strength work into your running routine is the best way to stay healthy along with learning to listen to your body and understanding when to back off. Good luck.