I would go to the er it I was you
Chicken pox is like a virus it can harm you and the baby while you're pregnant
Give your ob/gyn a call. Here is some information on this: http://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/expert-answers/chickenpox-and-pregnancy/faq-20057886 The risk depends on where you are at in your pregnancy (how far along you are) but is relatively low. Good luck hon
Call your doctor or midwife, whomever is your LMC.