Warts can go away on their own, stay the same size or grow larger. That's just the nature of them. Sometimes they can hurt and cause dicomfort and sometimes they can't. Warts are usually flesh colored growths. They can come one at a time , groups, different locations. Warts are skin to skin so once the skin is infected they are there.
Also warts can develop in weeks, months and in some cases years so it is possible for them to show up later.
Usually the body can take care of the warts but doctor's aren't sure if the body can eradicate them or just reduce viral load. So it's just depends.
Some people have warts frequently and others don't. The best thing to do is check with your doctor as well as make sure you don't have any fluid filled blistering. If so that could be another infection .
If there are any other questions, just ask away