Withdrawing off of oxycodone... will i miscarry?

My doctor told me it was better for the baby if I just wd now. I was only using again for about 3 weeks about 30mg a day. But, had already began wd. I'm about 27 hours in and cramping. :( I don't want to lose my baby. I didn't know I was pregnant. I'm 7 1/2 weeks. Please help. everything on Google says wd is a terrible idea and I will miscarry. :'( 

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