I carry one of 3 weapons in different configurations. I have an elastic belly band for my P238 - 380 and Colt 38 snubbie - I wear scrubs a lot and can't use that waistband. I also carry a M&P9C with a Tuccker Heritage or Kholster. I have a mini-comfort carry from Durham Concealed Technologies, as well as a Kholster for my Colt. I can wear any of these for "all day" without issue. I can "tuck" around the kydex leather combos, and the Tucker, but not the belly band.
Finally I have a holster purse with a locking zipper for outfits that won't allow a holster on the body. (I tried an ankle and thigh and it heebed me out)
In the topic about not being able to conceal a full sized weapon I posted a pic of me with a tee shirt tucked with my M&P9C tucked. My kids, family etc never notice, even when I felg like I had a huge "tooma" where my gun is... Carry confidence comes with time. Some days I am way more confident than others.
Wish you the best in your journey!