Whats Happeing To Me ... Its Happeing More Often .... What do I Do .... Im Scared ?

It was really werid See It all Started after My Great Nana Died and Stright After That My boy Friend Broke Its Off ... I got Really mad and Upset about everything about not Knowing my Dad and Getting Bullyed Alot ..... Straight after that I was walking to school by my self and I started to think about something really werid .. I slowed down walked and stoped breathing then I got a really bad pain in my head and after That I started gasping for breath and Felt really dise and Like I was going to Fait .... I was by my self and Scared because It was all Happening and I could not Control any of it The slowing Down Or The Breathin It was like I had No Control ...... Now Its hapeending Like Two to Three Times a Day and Getting Worse and Longer .... I m Scared and Duno what to do ... and Embarred to tell anyone in case they Think Im Crazy ? ? ...... Whats worng with Me ??