As long as u cut on all the above food and alcohol after ur pregnancy, you should be fine. I was having sashimi buffet spread before I realised I was pregnant. Pray that everything will goes well for u, have positive thoughts and don't scare yourself. Maybe you can try other gynae or women's clinic to do a first check. I couldn't find one nearby my house too and in the end I went all the way to Novena Mount E.
Perhaps you can give a call to book an appt with them instead. Alternatively to go polyclinic. For 7 weeks tummy shouldnt be that big. It maybe due to alcohol that you had. Do get your pregnancy to be check soon since youve mentioned you drink alot and had all the raw food items. This is to ensure your baby is safe.
Omg I feel like u took words out of my mouth. 3 days before I found out I was pregnant. I had 4 bottles champagne during omakase with my girls.