Sweet taste in mouth? 8DPO

I’m 8 dpo and I’ve had a nagging sweet taste at the back of my tongue now. It won’t go away no matter what I eat or drink. Feels like it’s a coating or something lol! I don’t know how to describe it.

I know they say a metallic taste can happen... but what about sweet???

(Side note, my boobs hurt and I’ve been having pains and twinges on my right side)