first ultrasound 7weeks...nervous

Hello ladies I had my first ultrasound 9/14 and it showed that I'm 7 weeks preggo 😍 butttt every since then I've been having a brownish pink discharge this is my first pregnancy and I really want this baby to be healthy and I'm scared I only see the discharge when I wipe and yesterday there was a spot about the size of a ladybug (maybe) I would say in my panty liner my stomach is still a little crampy has anyone else experienced this??? My next ultrasound isn't until next Thursday advice please😩😩😩😩