Hi, I'm 17, male. I have a curved penis. Is that abnormal? Will it cause problems in sex?

Also, I am uncircumsized. I like leaving my penis exposed to the extent I can. but then by the end of the day the skin swells up! What should i do?

What is the normal penis size for guys my age? Does a huge penis cause problems? Mine is about 7 inches.

Thanks for the time and effort.