Is this a mole? It’s irregular in shape

hi there, I’m a 22 year old male from Scotland and just recently I noticed what I thought was maybe a scab at first on my leg but I tried scratching it and it’s smooth like the rest of my skin around it so it’s definitely not a scab. I’m worried it’s melanoma or something because it’s irregularly shaped. I’m not even sure it’s a mole though. I’ll leave a picture for people to look at and give feedback 

Melanoma comes in change in color getting larger itching, you need to see a skin Dr.

That really looks like no big deal

Just my opinion