My two months old baby has very slimmy poop for three days now. she poops at least four times daily with hard noisy push anytime she wants to poop?

Don't worry: Unless the number of BM's have greatly increased and she is acting fussy and not eating well. You didn't mention if she is breastfed, and if that is the case , it's possible that some change in your diet is responsible. Watch for the next few days, and in most cases these changes resolve without an explanation. See your doctor if not resolving