(((wolflvr))) We've all been there and we've all had our meltdowns where we needed to have a good screaming fit - it's normal. Lighten up on yourself about you reacted. Sadly, there will probably be a next time, so you'll get another chance at it. (Sad, but true)
We all have felt at the bottom of the priority list, we've all had meltdowns that showed a not-so-pleasant side of ourselves, etc. I think it's all just part of life when you live with an addict.