Had my first midwife appointment

So I had my first midwife appointment yesterday and my midwife is telling me that she is taking my pregnancy from my last normal period which was july 10th because I only had a 2 day period in august and it wasnt heavy so shes saying that could of been the implantation bleed she said it normally take 4 weeks for the implantation so if this is right I'm 11 weeks 6 days today I'm bloated so bad I've gone off all foods nothing seems to want to stay down or even just looking at it makes me feel sick what foes everyone else eat just something little so I'm still eating xx