Jen
There will be people here much more knowledgeable about this, but what I can think of against the discomfort is to go over the fit of the belt with your parents, and see if improvements can be made by some more bending here and there. And if you sleep on your side putting a pillow between your legs seems to help, I have read here several times, so perhaps you are already doing that.
Jen I'll be ok today not going anywhere
Are you saying you decided to wear the belt the whole day today then?
I agree that there has to be found a solution for you to make it comfortable, or you should stop altogether. I don't think getting a different belt is a good idea - no guarantee that it will be any better, and your parents will try even harder to make you wear it, because of the extra investment.
Stopping after getting your license might not be that easy: your parents will have gotten closer to their goal by then, and will put a lot of effort in keeping you belted. Like, what good is a drivers license if you can't afford a car?
Jen I'm not thinking I have to stay pure for my guy it's more for myself I want to explore with my partner and know its only ever him
It is good you're not doing it for anyone else, because you can not be sure your partner will appreciate your gift enough that it would be worth the effort. I know when I had sex for the first time (over 30 years ago), my girlfriend told me she was still a virgin, and my response was just 'for me it is the first time too' - never heard of a hymen at that time, or that for many women it is a major step 😮 I was so green at that time that I needed a moment to figure out which opening was which; that will probably hardly happen anymore, now it is so easy to find everything you want to know on the internet. Putting on a condom was a struggle too. Just some examples on how awkward a first time can be. And from what I have heard, for many women the first few times are not that enjoyable.
I'm a pretty analytical guy, so romantic ideas like keeping yourself pure for Mr. Right do not feel as important to me as practical disadvantages. But in the end you should of course choose the values that feel right for you. I just worry that, with limited experience in relationships (not sure - perhaps you already had lots of boyfriends), that chances of Mr. Right turning out to be not that right for you after all might be bigger. The numbers show that determining if a partner is right for you is hard for many people, considering how many get a divorce or stay in an unhappy marriage for whatever reason, even though almost all will have been convinced he/she was right when they said 'yes'.