Worried please help

I'm worried, I can't find anything on the internet about my poop. The past like 6 months have been rough, so I just told myself I probably have IBS, and there's not much I can do. I have different types of poop but when I go sometimes it just kinda falls out with force into a large pile with no shape! The smell is also unbearable. Then after I get pain in my abdomen usually on the left side. The pile is like an animal or something, embarrassingly kind of like a cow patty. Then at other times I can't go for days, then at times it's mucousy little pieces. And I have stomach pain everyday, it's getting to where I just want to stop eating, then hunger kicks in. Can anyone help me until I go to the doctor?

Mucous is nothing new I've been experiencing that for about a year now off and on! I've tried some food journaling but I can't figure what triggers the symptoms, I can eat the same type foods and get different reactions! I'm gonna try the lactose thing though, thanks!

Parasites are always worth a try when mucus is about.