Can there be any negative effects of smoking weed because it just seems to relax me and i don't see it as harmful?

It can be harmful.: Possible effects of marijuana: anxiety, depression, fear, panic , delusions, paranoia, hallucinations, losing touch with reality, inattentiveness, short-term memory problems, disturbances of thought processes. Fatigue, poor concentration, slowed reaction times ; slowed problem solving. Some people develop a dry mouth, have a rapid heart rate or may feel hungry.