she might not. if shes bf she can go up to 7 days with out a poop. and ff usually up to 3. and if shes really new you should ask her dr. the vaseline isnt really recommened for babies so little.

Thermometer shouldn't hurt with Vaseline, I guess some q tips can be thick though

I did that last night it look like it hurt her but it did make her go right away @bianca_rose

Vaseline on q tip or thermometer, insert the tip and hold for 10 secs, move on and out a few times, will make them go almost immediately