what does semen smell like?

Penny
im approaching 10 weeks pregnant. my bfriend and i are constantly having  condom-less, (obviously:)), sex. my vaginal discharge has been heavy with a funny smell to it. im wondering if it's his semen im smelling? does cum smell? does it smell the way it tastes? if it's his spunk that im smelling is it semen or sperm that smells?