Hi! I'm a student, so during any vacations I usually travel back to my hometown and stay with my parents there. Now, last summer my incon wasn't that bad as it is now, but I still felt like I was barely able to hide it from my mom, stepdad and two younger siblings. I was mainly bedwetting and I could get away with only a pullup during daytime, but I still worried that someone, especially my nosey stepdad, would find used diapers in the trash outside (I threw them away at night, since my bedroom is right next to the garage where the bins are).
Now, summer is still a few months away, but I keep worrying about how I should handle this. I feel like I should just be able to tell all this to my mom and not worry about her finding out by herself, but something inside me is just not able to. I know she would be supportive, she always is, but I fear that this would be "too much" for her to handle, since I feel like my ptsd is already taking a toll on her. I didn't even tell her about that myself, my gf did. I don't really want to do that to her, but is it any better hiding it? I certainly isn't going to help my anxiety much.
I don't know what to do

Any suggestions?
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Edit:
I should also mention that I was able to successfully hide it during xmas break, but that was only for a week and a half. Summer break lasts 2-3 months...