Same weight for 5 weeks

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Hello everyone!

I have been weighing myself on Sunday mornings every week for about 4 months. I started at 283 and as of this morning I am 250. Now my main question is I have been at 248-250 for almost 5 weeks, and I actually was at 246.6 on Saturday but I went back to 250 in a matter of two days.

My diet is really clean and I am eating about 1800-2100 calories a day while doing weight training 5 days a week Monday - Friday.

I am just wondering if maybe after my 45min workout if I should be doing some cardio afterwards or if I need to eat less or more. Not really sure.

I am a 22 year old male about 6'' 1' in height. if that helps with anything.

Any help is appreciated