Any of you lady’s have early symptoms at 4DPO?

We’ve been TTC for 11 months now. We had a miscarriage back in March. My question is have any of you ladies had symptoms at 4DPO. I’m on cycle day 21 , 4DPO &’ have had terrible nausea. I can’t keep any food down &’ my body feels completely weak.. Any of you ladies have similar situations?