I have recently been told i have BPD, its not a shock to me after reading up on how some people are with BPD, just wanting information on "symptoms"?

I tend to find that my moods are in stages, I'll be happy and social for months and then get stuck into myself and get suicidal for a few days/weeks. After reading information on here about FP and splitting it makes a lot ot sense but just wondering if others tend to have similar lengths between lows and highs 

I definitely find that its more often than not when i find a new FP or at least romantic interest, im sure this is the same for most? 

Another thing is that i have never really felt depressed? Its that I'll be fine for months, then anxious about how my FP sees me, the feeling of abandonment when they dont text back or if they dont hold my hand (its the small things, im assuming this is splitting?) And then tell myself I'll be alone forever and should give up because i have no purpose to keep going, a few days maybe a week later I'll be perfectly fine again

Any guidance or advice is appreciated