Miscarriage ??

For the pass few days I been feeling cramps in my bad and stomach and My pregnancy symptoms went away about last week. But I haven’t seen any blood but brown discharge. I believe I’m about 8 or 9 weeks pregnant. I don’t want to go to ER that’s a bill it’s self lol. But I just can’t wait until next week to have my ultrasound. I just want to know if I’m having one or not it’s stressing me out