Could I have gained 4 pounds in 10 days?

So on July 17th I was 106.8

I workout 5 days out the week for 35min

An for the last 10 days it’s showing 110.0

Pounds. I haven’t over ate or anything. I am about to start in 2 days. But could I have gained 4 pounds that quick. Im not wanting to gain so I’m alittle frustrated because I’ve been doing my cardio for 35min so idk what I’m doing wrong.

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