Hi Monalisa.
Similar experience to me. I had GERD / acid reflux at the start of my peri journey. Probably brought on by extreme anxiety (from nowhere!) which was my first noticeable symptom. I didn’t realise it was acid as it wasn’t going to my throat they way it did when I was pregnant. Scary chest pain that also went to my back / shoulder blade. GP suggested acid reflux after ecg / bloods to check heart (all come back ok) and they put me on lansoprozole (same as omeprazole) once a day for 4 weeks Eased a bit and I limited my diet.. it was tough. Ate like a hamster. Did the usual tricks of no eating 4 hours before bed etc. Thought It was my HRT causing it but meno GP said it’s unlikely. I wasn’t convinced it was acid / GERD. I now know my anxiety had triggered it. As my HRT kicked in and the anxiety eased, so did the acid and chest pain.
Long story short, A few weeks into HRT, and nearly 4 weeks on the lansoprozole and anxiety came back, chest hit bad again but different pain. Went to A&E, all test fine and they doubled my dose of lansoprozole. Hated the side efforts of insomnia / distrusted sleep it caused and constipation, this on top of peri symptoms. Life was miserable. 3 more weeks on double dose, I went back to GP. Still had chest pain but didn’t feel acidy, pain felt different and was convinced something was wrong. They diagnosed oesophagitus and costochondritis which is the cause of 67% of people going to A&E with chest pain apparently (usually treatment for that is ibuprofen) mine was probably caused by acid and stress. I was given H2 blocker and diazepam to relax me as I could not have ibuprofen as it cause acid on top of lansoprozole but it spaced me out. I didn’t take the diazepam. Decided to stop all tablets a few days later and used gaviscon after meals (still being sensible about foods) and hot water bottle and paracetamol for the chest pain. I didn’t feel any worse, slept great for the first time in months and slowly got better. Just had a feeling the tablets were not helping. Fingers crossed it stays that way. Likely the HRT kicked in as well and helped the digestive system. I’m still careful with certain foods but I’m eating pretty normal now with the family again. I take gaviscon before bed and other times. Still get pain, not as bad and I can manage it better. Anxiety and stress triggers it for me too. Hope you get yours sorted, it’s awful on top of everything else. X