Bulking - When should I weigh myself?

So I went on a bulk exactly one month ago and I plan on keep going maybe until I reach 70kg. Here are my weights that I wrote down, every morning without clothes, but the problem is I pee every morning but I almost never take a dumb, so there are some odd flunctiations.

65kg 23/2/19
65.5 2/3/19
65kg 5/3/19
65.6kg 6/3/19
66.2kg 7/3/19
66kg 8/3/19
66kg 9/3/19
66kg 10/3/19
65.7kg 11/3/19
66.4kg 12/3/19
66.3kg 13/3/19
66.4kg 14/3/19
66.2kg 15/3/19
66.5kg 16/3/19
66.5 kg 17/3/19
66.3kg 18/3/19
66.1kg 19/3/19
66.8kg 21/3/19
66 kg (after ****) 22/3/19
66.5kg 23/3/19
67.4kg 24/3/19

And this morning I woke with almost 1kg more then yesterday, which makes me think it's probably due to the food I ate last night being more than usual and still in my body and I haven't taken a **** yet. So my weighing could be really inconsistent, should I maybe start weighing myself after a take a **** from now on, sometime in the day instead of the morning?

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