I think the conjunctions 'because' and 'so' are not natural and coherent. Could you help me check it and make it more natural? Thank you.
Because my roommate was ill, I should take her to the hospital. So I forgot it.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.