More likely to be due to a drop in oestrogen levels. As they drop so muscles may become lax including the digestive tract. I've had treatment for reflux cough for about a year, having managed the reflux and heart burn with 'Rennies' or 'milk of magnesia' tablets.
4 me it's annoying clearing throat action during the day, anytime after mid-morning - sometimes I need to take an extra Omperazolol in the day time as well as 1 at night.
