Why Do I Feel Feverish With Stomach Cramps And Gassy After My Period?

I had a fairly odd period. Had 2 days with reg flow and 4 days of spotting. B4 it came I had prego signs like high fever, cramps, feeling of need to throw up, and some tender Bbs and bloating. Now the spotting stop and my bbt stayed high and still is. I have mild cramps like I'm about to re start my period and gassy. I took a test on 3 day of this ''period'' and it came false. But I never felt like this b4 esp after my period.