I Had Some Botox in my Forehead 5 Days Ago and I've Noticed my Eyebrows Are Slightly Lower. Will It Get Better?

You heavy brow is the result of how the botox injection was performed.  It might actually get worse.  It could very well take several months for the effect to wear off.  I recommend that you get a different type of Botox treatment in the future.

Botox usually takes 10 days to see full result. If your eyebrows have begun to droop then your only option is to wait 3-4 months till its worn off, unfortunately theres nothing you can do to speed this process. 

At 5 days the  treated muscles are still "relaxing" and you will most likely see a change from what you are seeing at 5 days after the injection.  The final result is usually about 2 weeks.  If your eyebrows are low at this point, they may get even lower and there is nothing you can do to raise them.  You will have to wait for the Botox to wear off which can take 3 months.  Followup with your doctor so that they can take after photos.  It will be helpful for future treatments to compare the photos and evaluate your original dosing, placement of injections, ie your "recipe" in order to change it for unsatisfactory results or keep it the same if the results are satisfactory.  Botox is as much about shaping as it is about wrinkles.  It is very important who you select for a provider.  You can locate a board certified plastic surgeon in your area by checking the practice locator at surgery.org.  This is the website for the American Society for Aesthetic Plastic Surgery.