Adam, I just wanted to let you know that a lot of diagnoses overlap with similar things. Like, self harm is often a component of BPD, but you don't have to have BPD to self harm - it's a part of MANY diagnoses.

It's nice to have a label sometimes, in terms of coming to grips with how to get better, but I wouldn't rush into anything so early. Of course there is no problem with telling your T you think you meet the criteria. I'm sure it'd lead to a fruitful discussion. Just don't be surprised if they don't want to label you so early either.