If it is effecting your daily life, go see your doctor and tell him/her what is going on. Request a thorough physical. Review any medications you may be on since they can sometimes cause memory problems.
Make sure you are eating well, with a balanced nutrition.
Exercise your brain. Learn something new. Do word or math puzzles.
Adapt and adopt some of these tips from the Mayo clinic for improving memory. See the link for the full details of each tip:
No. 1: Stay mentally active
No. 2: Socialize regularly
No. 3: Get organized
No. 4: Focus
No. 5: Eat a healthy diet
No. 6: Include physical activity in your daily routine
No. 7: Manage chronic conditions
When to seek help for memory loss