TMI no pictures lol

Tiffanie • try to conceive baby number 2. Married, soon to be 3 year old daughter; just looking for some new mommy friends.
I'm gonna apologize in advance cause this could be a little tmi and slightly embarrassing. Haha 
​In a normal week I have a BM two times, while I know that isn't healthy; it's my normal. Been that way since middle school. 
​For about a week now I've been using the bathroom every bit of 4 or 5 times a day, everyday. Usually followed with some severe indigestion and heartburn. 
​The stool is pretty close to liquid form, but I still have to strain and sometimes it burns. 
​Literally nothing as changed, no new diet, no unusual foods and no new medications. It's a complete random change. I've been to two different doctors and nothing is coming out of any tests they run. 
​Any advice, or suggestions? 
​Sorry this is so long. 
​Thanks in advance. (: