I’m 2 months postpartum & have some weird symptoms

I got my first period in march it was heavy bleeding but not too much to where it was unordinary but this month I haven’t had a period last week I would started it but instead I got periods cramps bloated on my upper belly and nausea I was worried I was pregnant so I took a test and it was negative, then the symptoms went away until 2 days ago they came back out of nowhere & it came with a light fever this time & red splotches on my body I went to the er they said I should only go there if I’m having a life threatening event happening im going to call the dr tmrw & see if they can get me in but im just wondering if any of y’all ladies went thru something like this as well? I’ve never experienced things like this before..