so I had a another post about how I was bad about taking my medication (once every 3-4 days) and have been experiencing major panic attacks, like full on body shakes and extreme panic and some disassociation. This morning after taking my medicine as I should have for the past wee I started to have a panic attack, I could feel it coming on and pushing at me in waves, each time I thought it was going to take over me I managed to control it and calm myself down. could this be the start of my medicine starting to work again after taking it regularly again?
Yes it could be the start. It does seem like it could be the most possible outcome as you seem to be getting better a little by little. Remember the NHS say it’ll take 4-8 weeks for it to “fully” work. It’s not case at all. Depends on the severity, length of the depression anxiety or OCD etc. I can take 6-9 months to fully benefit your brain. I myself am on prozac for anxiety and MDD. 2 months in and i seem to be getting a little better each day too, it doesnt happen instantly and takes alot of your own willpower 
I was on sertraline before this for 15 years. tried to wean off (albeit the wrong way) and had a major panic episode and dissociative episode. I started seeing a pdoc and was prescribed prozac instead because of my OCD. I was good about taking it for 2 years and then the past year I’ve been really bad. like once every 2-3-4 days (honestly just when I felt like it) and I just moved (drove 8hrs in a uhaul on 3 hrs of sleep, slept 5hrs and then unpacked and then went back to work the next day.) during this move I had a major panic attack. and have been back to taking my medication regularly for a week now. I hope I’m getting better. not sure if this is a combo of withdrawls all the stress or getting back on my medicine regularly but it’s been really hard 
I’m tired often and have little to no appetite and I still need to be careful about what I do when it comes to my mood. hoping this gets better.