Have got pimple like bumps in the inside of the cheeks that come and go. And feel my cheeks are swollen inside but not hurting. Was diagonised with HSV1?

It's very common. HSV 1 is common in more than 50% of individuals. Unfortunately there's no cure, but there are measures you can take to prevent outbreaks (the bumps from forming). Outbreaks usually occur when under stress, high winds, cold, low sleep, and lowered immune system (sick). Sleep well, eat well, and try not to stress and you will have considerably less outbreaks. There are also medications you can take.