Cramping while laying on back but not on side.

Ok guys I experienced some mild cramping for two days when I was 7 weeks & 6 days. Currently I'm 8 weeks a two days & I didn't cramp at all yesterday except I noticed when I try to sleep on my back I feel mild cramping in my lower uterus area and pulling in my up abdomen. And then when I lay on my side it gets better. I still have pregnancy symptoms though they have greatly reduced. My breast seem to be getting less tender to almost non, food aversions have pretty much left, I'm still peeing some what alot. I'm worried that I could be having a missed miscarriage due to the fact that I feel so normal all of a sudden. The only thing that feels out of place is everything I eat upset to my stomach and I have to poop a lot. So more so gastrointestinal issues. But I feel like my symptoms have reduced to nothing in my first appointment is not until Friday I'm kind of worried about it.