It's possible. Some outbreaks leave me more tired and achy than others do, but more so if I was already stressed or tired before.
In any case, you'll know in a couple of days whether or not you have something else going on, like a cold or another illness. In time, you'll also know what's normal for you with hsv1. There are some things that are expected with herpes, oral or genital, and some things that vary from person to person.
Abreva only shortens the outbreak by about a day to day and a half. You'd be better off getting a prescription from your doctor for Valtrex or acyclovir that you can take at the very first sign of anything, and maybe prevent an outbreak, or shorten it a lot more than that.