Spotting please HELP

Yesterday coming home from work I get my blood results that say YES I'm pregnant. Level was 125 this was at 13 dpo. My progesterone was 8.5 they said that was also good.

I use the bathroom when I get home and see light brown pink spotting. So I INMEDIATELY Call Back My Dr and he gave a couple of scenarios. I have to go back on Monday for more blood work to check to see if levels are rising.

I'm not using a pad or anything yet. Just very scared because I had a mc in july.

Any similar experiences please share. Monday is so far away to get answers.