Trigger warning: Possible miscarriage

I got my BFP last Wednesday and have been testing to see line progression. Things were going okay, but the lines started getting lighter to almost nonexistent today. I’ve had some cramping off and on today, no blood, but I’m monitoring the aches because I’m scared of an ectopic pregnancy. Boobs aren’t really hurting any more, either. I’m 36, and this would be our second baby...and I’m just heartbroken. My husband is just frustrated with me because I’m obsessively testing. He thinks I’m worrying over nothing. Anyway, just here to vent and be sad, I guess. Would appreciate any prayers you’re willing to say on my behalf tonight.