Doesn’t look like a good sign....

Back story- took pregnancy tests last Monday which was 4 days before my period. (First picture) all different brands. Went to dr that am got blood work. I was only three weeks so my HCG was only 12, progesterone was 18. Dr wants to wait and see my on the 28th. To keep reassuring myself I keep taking more tests. The other day I took the first response (2nd picture) Last night was the digital (3rd picture), this morning was first response( last picture) The line is so faint I’m so nervous. Now I have also been spotting since Friday. Just brown and light pink. No red. Any advice? Debating on calling the dr today and telling them to see me sooner.