I am sorry about it. You have been in a tough situation; so anxiety and depression is natural. You have to come out of it, though, I understand, saying is easy. A relationship is always bilateral. Thus if you had not been dealt in a proper way, you may consider severing the relation. Once you have been hurt, healing is always not easy. Still give it some time, as you mentioned too, of not taking an impulsive decision.
Consider following points;
a) can both of you talk on the differences you had,
b) is there a point of return,
c) possibility of normalization of the relationship is by feeling sorry and not repeating the mistakes, so if that is present, wait for some time.
d) if you think that you had already exhausted all the options, just say quit and start afresh.
Please feel free for your follow up questions.
I would be happy to assist you further, if you need any more information.
Thanks for using Just Answer.