Weird feeling in my gut

Sunday night I went to the hospital because I had some light bleeding (but enough to scare me & I’m 19 weeks btw) and they said everything was good they checked her heartbeat but couldn’t tell me why I was bleeding and didn’t want to do anything else so they sent me home. I rescheduled my anatomy ultrasound for this Wednesday (today) instead of next Wednesday and i have been feeling her push (but not kick) and I know everything is probably okay but why am I freaking out like this, I’m terrified I’m gonna be in there and there gonna tell me something’s wrong. What can I do to ease my mind or make me feel better,?