17 m old horrible tantrum

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So I’m a first time mom and I have a 17m old. The past week or two he has been throwing everything! You can tell him no, put him In time out, and he will still come and throw things at you. Not only that but he is throwing horrible tantrums! Idk what to do?! We had to put him in his crib today and just let him scream bc nothing we did would help and after 10 mins he was still doing it... it’s wearing me and my husband out. I’m also in the process of trying to talk my husband into #2, but with my sons behavior it is not looking good. I just really don’t want my son To be a brat...

I just need advice on how everyone disciplines their little ones ... 😓😓