Weird symptoms after miscarriage???

Alexis

So I had a miscarriage starting April 7th (went to ER and they confirmed with blood work), my obgyn said he would just wait to see me until my may 22nd appointment so I haven’t been checked/seen yet. Recently, I started getting really bad headaches that make me dizzy and weak. And I’ve been throwing up for 4/5 days now as well. My period is also 8 days late but I tested twice and got two BFNs. Could i just be having a virus or could this be caused by my miscarriage?