Too dark for 12dpo?

I've been having pretty intense left ovary pain (I think it's caused by a corpus luteum cyst) since I found out I was pregnant 9/10dpo. This my test at 12dpo, it's so dark!!! Do you think that could mean something sinister? This is my 4th pregnancy and I've never experienced this. Could the pain possibly be round ligament pain due to multiples? I'm not doubled over in pain and my sister who is a physician assistant has said that it's too early to be feeling ectopic pain she would bet it's a cyst? Opinions appreciated!