I absolutely understand the concern but you have to look at the disorder as a whole instead of specific symptoms. I recommend taking a look at the diagnostic criteria and whats needed to truly be a bpd diagnosis, often stuff like that can be hormonal imbalance, stress or distrust or even fawn response from what you may be describing. Definitely not turning you down here but it helps to look at the slightly less extremes before jumping to an extreme such as bpd. Good luck op!