Hpt after a trigger shot

So this cycle I started clomid, trigger shot, and timed intercourse. I read that it can take awhile for the hcg from the trigger to leave your system. I tested it out and finally got a negative hpt 10 days after trigger....I’m supposed to start my period in 4 days....my question to anyone is, has anyone gotten a negative hpt after trigger this late and still gotten a bfp a couple days later?.....I’m feeling like it’s going to stay negative. I would think that if I was pregnant I would still be getting a positive that gets darker.😢