I strongly suspect that unless by chance you are taking one of the many prescription drugs prescribed by your doctor as a treatment for a medical condition, which includes those medicines well known to suppress REM (Rapid Eye Movement) or dreaming sleep (a long list which includes some antidepressants, stimulants, antihistamines and most if not all sleeping tablets), that it is more likely you are not remembering your dreams as well as you did before, rather than it being a matter of you no longer dreaming at all.
Chronic snoring and bouts of sleep apnea where the person temporarily forgets to breathe several times every night can also play havoc with our ability to carry back memories of our nightly dream excursions with us, upon waking. We naturally require less REM sleep and more of the dreamless deeper healing variety as we get older, but at 26 years of age I doubt that this is a problem yet if you have been in the habit of remembering a large proportion of your dreams up until recently.
Getting yourself overly anxious about this is almost almost guaranteed to make the problem worse and/or longer lasting than it otherwise might have been. Do anything which helps you to relax more (preferably not including prescribed drugs unless they are only to be used in the short term, or when you are especially desperate to urgently get some sleep before you collapse from complete exhaustion).
We normally dream for several cycles of each approximately 90 minutes every night, so reestablish your regular sleep pattern, and do not resist sleep when it comes simply because you are too busy.
Keep a dream journal handy (or your laptop) on the bedside table to record your memories and feelings from that night, before you step out of bed in the morning, and the memories almost instantly begin to fade.
Suggest to yourself as you drift off to sleep at night that you will not only dream, but that you will also increasingly bring back the memories of your dreams with you for the purposes of your own growth and development into waking consciousness.
Hoping that at least one or more of these suggestions helps you to remember your dreams once again, as you did before.
L&L,
eye_of_tiger
