For how long this is going on?
Was this preceded with something?
Are you going through a stressful period?

Insomnia doesn't only mean not sleeping for days, but, just like in your case it means having trouble sleeping (trouble falling asleep, trouble staying asleep, waking up earlier than you want to, or not feeling refreshed when you do wake up)
Having one of these sleeping problems is equal with having insomnia.

It's been going on for about 2 years I'd say. And yes I think I'm very stressful.

Is this everyday scenario for the last two years?

First, you should pay attention to the stressors that disturb your sleep, whether it is infrequently or on a regular basis and second, try to find ways to relive some of the stress in your life.

Do you have good sleep hygiene?
Are you taking afternoon naps?

I take a shower before I go to sleep.
And I sleep for maybe 50 minutes in school.
I get alot of cramps in my legs when I sleep too, and they wake me up.
This week I had 3. =/
And I don't know how to get rid of my stress =/

Try to avoid napping during the day.
If you aren't physically active, make regular exercise to be part of your daily life, but don't exercise too close to bedtime.
Give yourself plenty of time, about two hours, to relax before bedtime, engaging in a relaxing, non-alerting activity such as reading or listening to music. Having a shower is a great idea, too. And, go to bed only when you're tired.

Thinking of you!
Marija

Mmk thank you

You are welcome!
Are the leg cramps usually affecting calf muscles?
Does the pain ease when you stretch the muscle that is causing you pain?

Yea their in the calf muscle, people call it a "charlie horse" or something. And it doesn't always go away after I stretch it.

Are these muscle cramps sudden and intense feelings of pain?
Do you find the muscle still tender and sore several hours after the cramp?
Do you currently take some medicines?

Yes, they wake me up at night and usually take awhile to go away. And no I don't take any medications. But I have recently tried Simply Sleep which contains Diphenhydramine HCL 25 mg per caplet, I took about 13 of those, and it didn't have any effect on me. I heard from somewhere that if you take any sleeping pills and they don't work, then this could be a sign of insomnia. Idk though.

Sudden and intense feelings of pain in the leg or foot, caused when a muscle contracts and tightens are sleep related leg cramps. They may happen while you are still awake or after you are asleep.
Like in your case, the muscle cramp not only causes pain, but it can also disturb the sleep. It can make it hard to fall asleep. It may also wake the person up after have been asleep. The soreness felt after the cramp can also make it hard to go back to sleep again.
About 7% of children and teens have leg cramps that are not very frequent.
For how long you are experiencing leg cramps?
Do you get them every night?
Do you exercise vigorously?
Do you take enough liquids during day?

I do not get them every night. More like 1 or 2 times a month. And I suppose I've been having them for 1 or 2 years. I don't exercise at all anymore, but in the last year, i exercised a lot and still got the cramps, and I drink a lot of water during the day.

At times, leg cramps can be eased by massaging the area in pain, applying heat to the muscle and moving the affected leg or foot.
Cramps tend to come and go over a length of many years.
Are you aware of some medical condition you may have (diabetes, blood vessel disease)?
Do you fall asleep at about the same time every "night" (usually after midnight), no matter what time you go to bed?
Do you have difficulty waking up in the mornings?
Do you find it much easier to sleep during the morning than at night?