TTC baby number 2

So my app tells me every other day is fine to have sex while trying to conceive but I have done that before then nothing and my period comes so I'm having sex every day during my fertile window. Is that bad?? I just don't know what else to do. My fiancé and I don't want to try anything like meds or testing 1) cause we do have a 3 and half year old and as much as I want a baby and her to have a sibling we were blessed to experience it once being pregnant etc and 2) my OB says cause we have got pregnant before and carried a healthy baby he has no worries. How many of you have got pregnant off having sex every day during your fertile Windows then every other day after?