15DPO Faint positive

Does this look like an indent or faint positive? I’m 15DPO and in previous pregnancy the test was way darker at this point. Does that mean it’s going to be a chemical?

Update: here is the progression over the past two days. I don’t feel like there is much progression. This would be 18DPO. I was testing ovulation with the strips and ovulated 7/1, and that is the last time we had sex this month so that would have been when I conceived. Has anyone had similar situations. I’m just concerned bc I’ve had an ectopic in the past and I’m scared it’s happening again.