Chemical pregnancy???? Or do I still have a chance?!?

So after 23 months of trying, going through a chemical already once before but it was completely different than this..... I got a very faint positive two days ago and then a darker line yesterday and today the faintest of lines, followed by my obsession of taking way too many pregnancy tests today totally diluted wee of negatives. I'm really hoping tomorrow I get a line, but I'm feel very discouraged