Hi, has anyone any advice or experiencing the same please

I'm a 36 year old female and will be the first to admit I have chronic health anxiety since I was 19 (when my mum got cancer) 

For the past 6-7 weeks I have heartburn every day, it's burning up constantly and driving me mad. Doesn't matter what I eat or drink. I was told about 10 years ago I most likely had reflux and was put on omeprazole 20mg. I've always had heartburn on and off but nothing consistant like this. The doctor told me to up my dose to 40mg for a month. It hasn't helped at all. I've now had to come off the omeprazole so I can be tested next week for Hpylori. Alongside the heartburn I mainly have lose stools that float. From extensive googling I've read that floating stools is a serious sign and I've convinced myself this is really sinister. I've got myself in such a bad way mentally that I can't function. I'm struggling to think of anything else and don't know how I'm going to cope waiting to get an answer as the waiting lists are usually long for any tests. I'm crying constantly. I've had the most difficult year and broke up with my kids dad. I was highly stressed when this began and now I'm terrified I'm seriously ill. I've no one to talk to as my mum has terminal but stable cancer and I don't want to stress her out. I hate that my anxiety is so horrendous (I'm on antipsychotics for it) but I can't stop reading horror stories online and convincing myself it applies to me. 
 

Any reply il be very grateful, I'm going to try and stay on this site for support and stop googling. 
 

Thanks