Peace be with you my dear sister (or sister to be) Hannah,
I've passed the road you're currently walking on, so I know exactly what it's like, how it feels, and what crosses your mind. And it's normal to worry and to have a lot of questions, don't be scared of that! Look at us other members of this forum - we've been muslims for weeks, months, or years, but still have questions to ask here! Even our Prophet pbuh was instructed by God:"...and say: My Lord, increase me in knowledge!" (Surah Taha, 114). Being a muslim doesn't mean having all the answers and no questions - it means having the right answers to basic and important questions, and to never stop looking for the rest of answers/knowledge. Being a muslim means seeking knowledge constantly, even if you think you've learned enough
So, If you're familiar with brother Joseph's articles, I think it will be easier to understand and grow and deepen your knowledge. The moment you get to know Allah and his attributes, that moment you will understand why He commanded us some things and forbade us some others. And when this moment comes, you will love your creator. And once you love something/someone, you'd do anything for them
you'd abstain from anything that hurts their feelings and you'd be willing to do anything that would please them
in this case, you'd be willing to find 5 minutes to pray, you'd be willing to abstain from food and drink and rough talk and bad manners during one full month. That's what fasting means my dear, not just staying hungry and thirsty
Please be aware that God doesn't expect perfection from us. He knows the capacity of any of us. And so He only expects us to do the best we can, within our possibilities, without overburdening ourselves. Here's a response from brother Joseph on the matter of fasting difficulties which I thought you might find helpful, although you're not pregnant:
http://quransmessage.com/forum/index.php?topic=1318.0May God bless you,
Your sister Seraphina