missing period

I am getting over bronchitis that lasted 4 days with the cough. My fever broke 3 nights ago and ever since I've been feeling better. My period was due 3 days ago, and it's MIA. It's never not come. My boyfriend said my vagina smells slightly fishy now. I've had white discharge and sex is amazing, like my orgasms feel slightly longer than usual. My vagina feels tighter or my boyfriends penis is bigger? Lol. And my vagina has been super wet. I've just started getting nausea. And certain foods I just can't eat or I feel like I'll puke. And my nipples are sensitive along with my tummy feeling bloated. If I am pregnant I'd be 4 weeks in. Answers or replys please? Preganant? Or missed period because I was sick?