im miscarrying again aren't i?

so I've had 6 miscarriages in a row and the last four started with low hcg. found out Tues by beta I was pregnant but it was a 6.3 went back 48 hrs later and it was 12.5 so I was a little hopeful. but I always test because of this reason. so I tested last night top test beautiful line , tested again this morning middle test lighter then the first and then I test again an hour ago roughly and that's the last test. it doesn't look good does it??? my heart is so broken