Going through a breakup

So I (F19)/ended a three year relationship with my (M21) boyfriend. He was talking to another girl on the phone. Its been really rough. I think I trauma bonded with him. But earlier i woke up with really bad anxiety, shaking, fast heartbeat, took a while to calm down. Im just looking for advice on how to cope and deal with the stress because im struggling, Ya all. im fr struggling. Thanks in advance.