Feeling fine by week 5 then stress triggers at week 6?

Hi guys,
I posted on here before Xmas (around the 3/12).
Back then I’d had a lot of stress at work and was very worn out. I’d been on 100mg for a year or so- although I’ve been on SSRIs since 2005. I basically went up to 150 and was struggling so went to 125 and soldiered on. Took two weeks off before Xmas then had two weeks off for Xmas (lucky teacher!)

I returned to work- 50 miles from my family where I’d been staying since I went off- to the house I live in alone. I felt like I was fine- my CBT therapist said she was amazed by how quickly I’d improved. I was playing rugby and teaching fine and dandy.

Then on Thursday when I was doing my morning meditation I felt my breathing was shallow. That night I felt a wave of adrenaline and had a panic attack.
Since then I’ve come back home for the weekend and looking at seeing how I am on Monday- I still feel quite tender.

I guess my question is- is it common to feel better after 6 weeks and then have a blip at 6 weeks? Will I go back to square one?

Thanks guys