Gaining 2kg per month?

[bodyartt]

I want to clean bulk, not dirty bulk. In the last four months, I have gained 7 kilos ... so basically I've gained almost 2 kilos each month. Is this a good rate, good in the sense that the 7 kilos will be mostly muscle? I've been working out during those months. My point is, if a person gains too much weight per month (like 5 kilos or so), then much of it will be fat. In this context, is 2 kilo a month a safe rate?

[C.O.]

Have you tried measuring your bmi or body fat?