Spotting and cramping 5dpfet5dt

I am on day 5 post transfer of my 5 day 4BA euploid embryo, and since day 3 I've been having fient pink spotting on and off, and mild cramps. It's day 5 now and I woke up with a light brown smudge on my toilet paper and very very stinky pee, even though chugging loads of water! Did anyone else get this (more so the spotting) and still go on to get a positive test? My clinic called and told me not to panic but of course I'm panicking, even though she said it can be very normal and probably implantation bleeding! My period isn't due for another 5-8 days. If anyone's had a positive experience despite this then I'd really appreciate hearing your story for some hope :)