Hi Cleomie - it's actually pretty common to feel a little wobbly around 90 days - it's long enough for us to forget the really bad stuff about drinking and not quite long enough for us to see the full benefits of staying sober.
I often confused abstinence for control. I'd start thinking 'I feel really good and I haven't had a drink in months - maybe I'm a normal drinker now...?'
nope.
Stay with it Cleomie. Look back to your earliest posts here if you need more persuading to stay sober
D