Positive test 6dpt line getting darker but cramping and brown blood

Kathy 🌈 • 29 ttc since 2014 3 mcs| 1 ect loss of tube| 1st IVF June19/Mc 8 weeks july19/ FET Oct19 -BFP Nov19 ....Due July/2020 Reggie born 10.07.20 👶🏼

I tested this morning again at 7dpt and 14 days past trigger and the line seems to be gradually darker. My beta is on Friday morning . I was feeling positive about the positive test but now since I’ve been having brown blood and cramping it’s seriously annoying me , has anyone else had this and still been ok I’m just worried now ?