You may have two seemingly separate issues, however could be connected.
1. The cause of your suspected cervical dysplasia, could be-at least in part- linked to long-term use of hormonal contraceptives. ( excessive progesterone could one of the culprits)
You must press your ObGyn to investigate the cause(s)
thoroughly.
Hormonal contraceptives have been linked also to enlarged turbinates and the resulting complications (which may explain some of your symptoms) !
Press the ENT to look into it.
2. A possible causative factor which should be investigated is low gastric acid levels, possibly resulting in partially digested foods, deficiencies, bacterial and fungal overgrowth, belching & burping, parasites, leaky gut, allergies (end result), etc.
To self-test take Betaine HCL with pepsin as per label, but adjust dose according to body size and meals.
Proteins require more to breakdown and so do larger meals. Small meals, vegetarian, salads, naturally require much less, so use your own judgement.
If after a few days if you feel consistently better, you know you have low gastric acid.
A Gastro may not be your best choice to help you,
should s/he not be open to these suspicions, since conventional medicine does not follow an algorithm
which is consistent with the above pathways.
My suggestion would be to seek a reputable Functional Medicine Doctor to help you.
Conventional medicine protocols are often flawed and specialists do not easily converge and co-operate.
Ent, Obgyn, Gastro, Allergist...I can't see it working well for you.
Best wishes,
Niko