I'm A 32 Year Old Female,smoker And Former Iv Drug

I'm a 32 year old female,smoker and former iv drug user now on methadone. I have recently deceased my dose from 100mg daily to 30mg,still experiencing mild withdrawal. I've noticed my skin gets really red all over lately,small purple veins I never had before,body aches,head aches,now the vein on my forearm ,the one that leads into my hand by my thumb sinks in when I raise it up,expands when it's down,getting really freaked out