Heartburn/acid reflux 🙄🔥

So I am 12 dpo soon to be 13 dpo tomorrow and last night I had the WORST heartburn/acid reflux ever. I get this VERY RARELY and it has never been so bad. It kept me awake for HOURS and I still have it. It’s just an awful burning feeling like I ate too many flamin hot Cheetos or something. I ate something light in the middle of the night because I thought what if it’s just a strong hunger pain... my stomach and throat were still on fire. I thought this is so out of the ordinary for me So I took a test and it was negative. My breasts hurt so bad and my uterus feels icky, like that “it’s coming feeling,” but idk does this sound like a symptom? Anyone else have bad heartburn in their TWW and come out with a positive? 🤷🏼‍♀️