Oh reflux! It starts 4 me in the area between the ribs, works up with a lot of excess saliva and burning. I've developed a cough so the GP prescribed omeprazolol in the morning.. Some nights it's worse than others. I also wake sometimes with a deep pain but it's not heart related as there's no radiation of pain in the arms.
Milk of Magnesia is my go-to in the evenings. As oestrogen levels drop the body may become dry: inside and out; skin, deep in the ears, eyes, vagina, vulva, scalp etc and muscles may become lax = aches and pains. Hiatus hernia is common during peri, due to laxity of muscles.