Spotting/Period

Took my first pregnancy test June 21 and it came back positive! After two more tests I figured the test was right! Finally, and 8 months of trying we were finally pregnant. I was so excited until this morning when I started spotting. I know this can be totally normal, but it is so unnerving! I have a doctors appointment on Tueaday so not too worried. But no one ever talks about the worry and anxiety one has when this happens. Am I the only one who has this or are there others?!?