I am scared; I've been having sleep problems for a year now. Is this insomnia?

Seek help. Not sleeping well for a year is going to take it's toll on you. Have you talked to your primary care doctor or have a sleep study done? If not get evaluated to find out the reasons. Have you practiced sleep hygiene -- going to bed at the same time; no naps in the afternoon, no caffeine after 2 or 3 pm; keeping your room on the chilly side, white noise machine? In any case, talk to your doctor.