the first trimester is the most common time in pregnancy for a miscarriage. it's not normal to have cramps or pain that early in pregnancy. headache is probably just hormones. and now sure what white chucks are but i would talk to your doctor about that
no i dont think so its normal to have pain but if you have heavy bleeding with strong cramps that means miscarriage , so dont worry consult a doctor for peace of mind bcoz its related to pregnancy. Good Luck