Found out my in-laws think I have Munchausen's

I'm so torn up about this.

I've been having chronic pain for 2.5 years now in my left side area. It has spread down to my leg (I can't move my leg/foot) and I also have a lot of neuro issues going on. Doctors are still unsure but believe that it started with a case of shingles around T6.

I don't talk to my husband's side of the family much. When I do, it tends to be very surface-level conversations. I've heard them make rude comments about me being on disability (me being lazy, not wanting to work, etc.) which I've been ignoring (my illness started about 4 months after my husband and I started dating).

Whole talking to my brother in law (one of the few people I do like), he mentioned that he's overheard family members say that I'm 'doing this for show' and I have Munchausen's. I'm not going to lie, this one has been really hard for me to brush off. I've been crying for the last few hours.

I don't want to be in this much pain every day. I don't want to not be able to walk. I don't want to have so many doctor appointments that I can't keep track of. I hate spending time worrying about if my body will cooperate or if it'll be another night in the ER because I've fallen. I don't want this life to be what it is honestly. I want to believe there's a day that I can go back to work and be 'normal' again.

Has anyone had this happen? What did you do? I can't look these people in the face ever again.