Hi! I'm new in this forum and 1st of all, I would like to say that english isn't my first language and that I used "search option" for 1 hour before posting new topic,so: sorry for any grammar mistakes.

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Now,my problem.
I was taking
Weight gainer for like 3 months and everything was great (no sideffects,my muscle grew) but after 3 months I stopped
gaining weight. So, I was advised to try whey protein.
I used it for only 2-3 weeks (can't remember exactly) and they worked fine for me. I've got 2 kg in those weeks. But then I started urinating a lot, and what made me councerned is waking up in the middle of night. I've read that urinating more frequently (including those annoying "in the middle of night") aren't anything special or dangerous.
But, I stopped using whey protein for a 2 weeks now and urinating is still present.
Now I'm pissed, because I'm not taking proteins but still I urinate a lot.
I'm 80 kg, and I was taking 3 x 30g per day of whey protein. (in the morning, afternoon,after workout)
I usually workout after 20:00h.
Should I see a doctor? Drink more water?!?
Please if you had experiences like this- help me with some advice.