Postpartum Experience? I need all the mama’s to comment!

I’m 5wks postpartum and I feel so off. My pregnancy was amazing! Didn’t have any issues , no gestational diabetes, or high blood pressure. A couple days after being discharged from the hospital, I experienced swelling in my feet and ankles, and it didn’t go away. I went to the ER and I had postpartum preeclampsia. I didn’t even have protein in my urine. I had to get the magnesium drip and had to stay in the hospital overnight. They also said my potassium was low “not super low”. So I took potassium supplements while there as well. During my pregnancy I did experience heart palpitations but I figured they would go away.. everyone said they were normal during pregnancy. Well, I still have them . Blood pressure was elevated at my last visit with my primary physician and she put me on magnesium since that was a little low too. She told me not to worry about the heart palpitations bc it was normal but she’s still sending me to a cardiologist sometime next week to just have a second opinion. But she told me not to worry and that she wasn’t concerned at all. But the anxiety in me can’t just not think about it. I’m so worried all the time. I’m just scared I’m dying!! Ik dramatic lol. Anyone else experience these things? Even if you didn’t, what was your experience after pregnancy??