I can totally relate to where you are coming from. Over the last year or so my OCD and germaphobia has gotten so bad that I do question what I'm eating, I'm a date checker or the use by checker. I wash my hands before I eat but while I'm eating if I touch something I usually have to use some hand sanitizer before I can touch my food again. It has progressed to a point where I have cut a lot of foods out of my diet, I've lost weight this year quite a lot actually, but I am seeing a therapist which I think may have triggered some feelings and emotions that may have been contributing to this progressive worry of food and what not. I wish anxiety/ocd/emetophobia/germaphobia didn't go hand in hand but it seems very much intertwined. What helps me is just reassuring myself that I'm fine, and that its just my anxiety trying to get the best of me. I keep myself busy after eating to keep my mind off of it. I will do laundry or cleaning just to stay occupied and it does help. It can get overwhelming and frustrating but you aren't the only one having these thoughts trust me! Hope you feel better.