Hello and welcome to HealingWell.
First off I am going to post the link to sx of Anxiety for you.
Anxiety Symptoms, Anxiety Attack Symptoms (Panic Attack Symptoms), Symptoms of Anxiety:
http://www.anxietycentre.com/anxiety-symptoms.shtml
I think you have identified your stressor ~ your break up with your girlfriend in January and the ongoing stress of trying to patch things up. The loss of a relationship is a major change in your life which would certainly be a trigger to your sx of anxiety.
When you lose a love relationship, you are likely to feel great sorrow and heartache.
Learn to understand your feelings and develop tools to cope with your relationship breakup. This may be a time you want to look into seeing a therapist to help you deal with your feelings.
Coming here and posting your feelings about your break-up is another good way to get your feelings out.
Stick with us as we are here to support you.