I'm using Epiduo as well. 45 days in or something like that. I've stopped counting days. Like Nicole says it's up and downs. It's now a linear process. Two steps forward and one step back.
The first 2-3 weeks it's normal to experience an initial purge / breakout as your skin is pushing all the bad stuff out.
You should see great improvement by month 2 or 3. The problem with a retinoid like Epiduo (adaplene) is that it takes time to work its magic.
Therefore patience is the key to success.