Withdrawal's not easy and you will feel irritable for a little while.
Try to remember you're detoxing from something you've done for a long time.
Weed withdrawal is faster than other kinds of withdrawal tho, in my experience - you'll be feeling a lot better on day 5-7 I reckon.
If you smoke again it's back to square one.
It's rough but be kind to yourself - and to those who love you too