Hcg test negative but no af help

Samiza

I miscarriage 24 April at 5 week

I have cycle of 26 days.last week start have symptômes of pregnancy:nausea tired boob hurt and tired and lot of white cm.hcg test yesterday negative.my husband sure im pregnant but to early.i have sex 8-9-11-17 mai. Before 17 mai have eggs white cm .did somebody have a blood test negative and know is pregnant later .....