OP, based on your comments on your trip you probably should NOT be taking psychedelics. coming close to suicide should be an indicator for you that this is probably not the road for you to go down. as for your "unnatural" feelings--i have a hard time believe you would never get unnatural feelings from mushrooms. some people have this idea in their heads that LSD is inherently worse for you because its made in a lab and doesnt grow out of the ground like mushrooms. to me, mushrooms feel much more unnatural because they have dozens of other alkaloids acting on your body and mind in conjunction with the psilocybin. notions like this in your head are bound to affect your trip, which because of the strange synaesthesia of LSD's effects, can affect your physiology.
why would you want to take LSD if you are just going to stay in your room feeling bored, "blocking the trip"? i think you should re-examine the reasons why you want to take the substances. they are very, very powerful. they can change your personality, your perception of the world, forever. you should only take psychedelics if you really want to.
as for next time, if there is a next time, try to think about how these things will be when you are tripping. facebook for example, is not a very fun thing when you are tripping. using a computer can be alright, if you put on some trippy videos on youtube or listen to some good music. also, i advise against tripping at home if your parents are there. usually tripping around any kind of authority figures isnt very fun, and can certainly inject a bit of anxiety into a trip that wouldnt be there otherwise. if you feel like you need to a change of atmosphere, going on a walk is great, especially if you can go into the woods or into a park. walking is good because of constantly changing scenery--you are multiplying all of the chances of you finding something interesting, just be careful and aware of your surroundings.