You could post a question asking if you're attractive like so many other people do here lol
Not getting compliments doesn't automatically mean that you're not attractive. If you're not really an approachable person, you won't get too many people going up to you with compliments, but that doesn't mean they're not thinking that you look good.
If you think your good looking and you have confidence others will start to also..and it may just be that they just plain don't say anything for no reason...its more common for girls to get that type of "You look cute today" and "Your so pretty!" comments...it might just be that they don't say anything period, not that they totaly go out of their way to not say you look nice lol And being a girl I don't usually go up to dudes and say like Your looking hot today haha It can be taken the wrong way lol But I will with girls lol Its just less awkward and won't be taken the wrong way So don't worry at all about it, don't depend on others to reassure you and give you confidence...
It's not a good sign. Maybe if you are a bit unapproachable and people don't get a chance to talk to you and give you compliments. If this isn't the case then you may not be that good looking. Never fear, you can become good looking, it's not like you can't change. Without seeing you the best thing is to go to the gym regularly, make sure your skin is clear, get a fresh cut and a new outfit.
Holy sh*t dude, 4 out of the 6 answers here are by people on level 9 or higher. Just thought I'd say.
And its not a bad sign if people don't go up to you and comment on your physical attributes, I don't know maybe if you asked family and friends their opinions I'm sure they would be more than happy to help.