Mrs tim! i'm sorry i just now seen this post.. or i would have replied sooner.
my advice..... be very very careful what your angry about. you admit to PTS (which i have too) and it can really overwhelm you and things you'd normally just be " irritated" about you become FURIOUS about. so stepping back and thinking " is this worth all this anger" or " is my anger towards my husband in proportion to what he did", will help.
Research PTS online, READ.. it can help your brain create paths to reasoning that otherwise you may not have.
do a little internal role playing.. the "what if" game.. what if my marriage ended what would i do, how would i cope , would i miss him, how would the child/children cope, what would day to day life be like apart.. ..
and alternatively " what if we make our marriage work, what would we/i do, how would we cope , what would day to day life be like, what are my short term goals and are his goals compatible..
daydreaming / mentally going over the choices can help you figure out what you WANT. and may help you figure out what you need .
PTS is hard to live with because you never know what will trigger it and it wears on your nerves big time.
find things to laugh about, find things that bring you a measure of joy, if you can, find those things with him, i hope you can work it out. but if you guys dont work it out that doesnt mean your " destined to be alone" it means you can put on your high heels and go huntin again. (eventually)