Pain/bleeding four weeks advance

So I’m about four weeks 3 days pregnant. And last night I started getting pain with a little bit of spotting. Well it went away. Then today I woke up fine then a while later started spotting brown then had really bad pain so ended up going to the er my beta hcg went from 559 (Thursday) to 2798 (today) and doctor is convinced it’s not a miscarry bc my numbers are rising. But tonight Blood is dripping in the toilet and there is a lot on my toilet paper when I wipe and it’s kinda reddish or sometimes red rustic looking My question is. is anyone else having or had bad pains and bleeding like this at four weeks? And got good news that everything was going to be ok

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