No idea what is going on!!

I need advice. I am currently on Cycle day 28. Had a definite OPK test result on day 13 and 24 of my cycle. Now today and yesterday my OPK tests have looked like this. I know they have been known to pick up HCG as well but I'm too scared to take a test incase I'm disappointed. I suppose I'm looking for someone to tell me I'm not going crazy!!