Girls, hello! I don't know what's going on, I feel nauseous in the mor…

Girls, hello! I don't know what's going on, I feel nauseous in the mornings, heartburn often takes me to the bathroom. Recently, sometimes there have been slight blood discharge, but I think it's not my period. Can I get pregnant with LactiNet? If so, could this cause miscarriage? I don't want that very much. I took a test yesterday and it was negative.