Pregnant or Not?

Cee

I had miscarriage 4 weeks from now, I still has this feeling in my tummy and weird burping everytime. Sometimes I felt nauseous and had joint pains especially on my left hand. Is there a possibility that I'm pregnant again? We use withdrawal method and I really am sure that there is no sperm involved however I'm still has this symptoms. I also has few white discharge when I check my cervix. Anyone who experienced the same thing? I need advice.