Bho/vac problems.

I've have recently got a new vac pump and vac chamber. I did a run of a hlf of good material and everything turned out good from what I saw. When I sat down to try out the (soft/not stable shatter) I feel like after two dabs I was almost to medicated. No headache though or weird feeling. Well yes a different feeling I just can't describe it. I vac my material for over 10-12 hrs. And flipped every so many hrs. Came out clear just not stable. But really what scares me is if this vac pump is leaking vac oil into the chamber and contaminating the shatter I'm trying to make. If anyone could help me out or give me any suggestions I would greatly appreciate it. Thank you