It's happening again

My nightmares I mean. It's only the 2nd week of uni. I have these weird dreams of people killing themselves, people commiting suicide everywhere on the road, people standing on the wall like Humpty Dumpty trying to jump off. I feel so tired of having these kinda weird things. I wanted to cry out just now because I can't differentiate which is reality and which is not. Damn it. Not again!!! Help...