Very Heavy Flow ?

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I’m 8w2d postpartum & my first postpartum period started yesterday. It was pretty light yesterday but today it’s done a total 180. It’s like running down my leg heavy when I stand up from using the bathroom, I’ve been up since 7am, it’s now 11:13 & I’ve gone through 3 pads (they weren’t like soaked but definitely needed to be changed), I’ve been dizzy & just not feeling well. I’ve been laying in bed with my feet elevated napping with my LO for over an hour & it’s still a heavy flow. Is this normal? I’m a FTM so I don’t know what to expect. Just didn’t think it would be this heavy?