Is there a possible chance I might be pregnant?

Emilee

So my period is suppose to start Sunday, but I'm not having any symptoms of my period, my boyfriend thinks I'm going to miss it but I told him I'm very doubtful I will because I don't have pregnancy symptoms at all or see any implantation bleeding when we did have sex, the only possible symptom is sore breast and there a little hard but that could be a period symptom, so him and I made a bet 10$ (just for fun) if I'm going to start or not, but I'm in huge denial that I am but I don't know any opinions? Also I haven't had any cramping or anything like that, that would possibly tell if I'm starting or not or being super moody (like I normally am) so I don't know. like I said I have wore breasts, increased appetite (little bit) and that's it also to say my boyfriend is patiently waiting to find out. opinions please?