I've been bulking in the past few weeks and stepped on the scales again today and noticed i've put on about half a stone

(about 7lbs)
I was originally about 190lbs, at roughly 12% body fat; since then though, i've been eating big and lifting hard, 4 days a week, consuming about 3500 - 4000 calories a day, leaving me at roughly 200lbs with a small amount of fat gain (which is to be expected)
My diet is along the lines of:
Breakfast:
4 scrambled eggs (2 yolk, 4 whites)
1.5 scoops of whey
Large bowl of oats
1 large glass of juice
Mid Morning
Tuna and Peanut butter sandwiches
Mid day
An oat bar, 1.5 scoops of protein and 2 scoops oats
Lunch
2 servings of wholemeal rice with mackerel in spicy tomato sauce.
Half a tub of fat free natural yogurt.
Prework out
1 scoop of whey protein, 2 scoops of oats, 1 banana, creatine and my bcaas.
Postwork out
2 scoops of whey protein, 1 scoop of oats, 3 table spoons of glucose along with my bcaas.
Postwork out meal
3 scrambled eggs (1 yolk, 3 whites) and some juice
A bowl of weetabix (this is more of a treat than anything as i love weetabix)
Pre-bed shake:
1 scoop of casein, 1 tablespoon of flaxseed oil
Throughout the day i'll also snack of various bits and peices like nuts, apples and other fruit.
My 4 days a week split has been:
Monday: Shoulders
Tuesday: Chest / Tris
Wednesday: Legs and Bis
Thursday: Back
With Friday, saturday and Sunday rest and other commitments.
I plan on keeping my diet pretty much as it is, until my gains start to slow down, and then maybe do another cut!