13 mo constipation help PLEASE!!!

I am super worried, I do that on the rarest of occasions but this whole week has no joke been 1 bad thing after another so now I'm just over anxious and on edge..

Since Mon my daughter strains like she has to poop or is popping but then only a drip of watery poop is there or nothing at all. But Mon and Tues even with that she had 2 "mashed potatoes" poops. Saw the Dr for a immunizations Wed and told her but she said since she pooped Mon & Tues she's fine. Now it's Thu and she never pooped Wed or today. Of course now I'm in a different state seeing family. And my mind is over reacting that my very oral child may have somehow swallowed something making it so she can't poop. So she strains and then there's like a drop of watery poop I guess. This girl will put everything in her mouth but fruit or juice 🤦🏼‍♀️ she's in a good mood, I rubbed her belly, it does not hurt her to do that. Then I went to the health food store for advice and they had a cod liver oil for kids and attested its safe and made for this.

So now what do I do from all your experiences? Do I try the cod liver, is it safe, have you had other remedies or situations, what should I watch out for? She is kind of drinking water but not much and isn't nursing nearly as much as she usually does. Help an emotionally exhausted mom whose been through the ringer already this week please! Thank you!