So sorry you are having pain, and don't feel like your doctors are taking you seriously. Late last year, I thought I was experiencing pelvic organ prolapse - I felt like my insides were trying to "fall out of me", and it grew increasingly more uncomfortable, even painful.
My primary doctor referred me to a urogynecologist for further evaluation, and her diagnosis stunned me. Fibromyalgia! I have suffered from that for almost 20 years, but to be told that my body was reacting to it in such a unique way, and that of all things, having sex with my husband was making it worse, was a shock to me. Luckily, there are things that my husband & I have been able to change to make this manageable, & there is also specialized physical therapy.
When I met again with my primary, they had never heard of Fibro causing such symptoms, but not every doctor can specialize in every condition for all aspects of our bodies. In your situation, perhaps you do need to see someone who is more specialized and can approach your diagnosis with a more in-depth examination. Regardless of who you are seeing for your medical care, you should not be made to feel that pain & discomfort is "normal". Women get their periods every month, & are able to function during the 1-3 days of cramping that accompanies it. To have pain that brings you to tears, discomfort that is intermittent throughout the month (not just associated with your cycle), and to have changes in the manifestation of these symptoms is something that needs to be addressed.
Depending on your insurance, you might be able to pick a specialist & see them on your own, or you may need your primary to write a referral. I always look up the bios of doctors before I choose one, so that I feel comfortable seeing them & knowing that they will have an approach that matches my needs for care (ie. bedside manner, specialties of practice, etc.).
One last thing - you have a LOT going on emotionally right now. Worrying about the pains, coming off BC with the intent to conceive, worrying what various diagnoses will mean for your family plans... All of that stress can cause your body to react, & could be making your symptoms worse. Try to find a way to process these issues, & keep your stress manageable - meditation, prayer, social support of friends/family. It will help you now, & as you move forward with all of this. I wish you the best, & hope for positive resolutions! T. :)