No bleeding after chemical but had positive hcg now.

Need some help confused so on January 12th i got a bunch of positive hcg test but they faded so i figured i was having another chemical. I had light pink spotting for one day then nothing so was very confused. I have been test hcg all negatives and now i got faint line on hcg. Has anyone had this happen and end up actually being pregnant again. Not allowed to post my test but there is a faint line. Thank you