I always get pip for the first week on whatever im doing when I start again. After that it stops. I guess everyone's different. I usually take some amoxicilin up to when I inject and for a couple days after the pin. I'm weird idk but never had any bad experiencesY'all ever have gear start to cause pip after it's like 6 months to a year old? Like it was pretty smooth at first and then for no obvious reason your test starts to hurt? Different vials, same batch