Hello debsmallback.
I too like salads and indulge myself at least twice per week with no adverse effects. However, we are all different in the way we process foods and it is wise to introduce these things in a methodical way so that if any individual thing within the meal has an adverse effect, then you can identify it and do something about 'it', rather than abandoning the whole concept of that type of meal.
I was always told that tomatoes skins are indigestible and are likely to cause a problem, so I cut them up thinly for my salads and have had no problems at all.
One of the consistent messages/ advice on here about any food is to chew-chew and chew again, and I feel that this also applies to salads. I like to have raw carrot in mine and at first I used to grate it so that it was already in small pieces before I got to eat it. However, part of the enjoyment for me was to crunch into it raw. so I now slice it into 'fingers' and make sure i chew it thoroughly. This, and some of the other ingredients, are still identifiable in my output as having not been digested entirely ( & sometimes not at all!), but this does not stop me eating them and enjoying the experience.
I do hope that you can experiment with your meals to the extent that you will eventually be able to eat whatever you want without regretting it.
Best wishes
Bill