4 days late - no AF..

[anxious21]

Hi all, I'm not sure where else to ask this as I'm just a bit confused.

Me and husband have been ttc #1 now for over 5 years

Unfortunately the hospital will not entertain helping us as my BMI puts me in the obese column. I'm very muscly and a standard size so despite my multiple attempts to lose the 5 stone they ask of me, it just doesn't happen

However, lately we've been trying the "baster" method using syringes, as hubby is starting to get performance stress after this amount of time.

My periods are very regular - 28 days. This is the first time in 5 years I'm late.
4 days late, but tests are negative. Pink spotting when I've wiped a couple of times, and two very tiny clots. But not an actual period. My periods are normally very heavy too, so can't mistake.

Has anyone had this before? I'm going out of my mind with stress

Anyone?

It's possibly implantation bleeding.
What test are you using some are more sensitive then others.

Have used clear blue, and some I got from Amazon. All saying negative.

Have done another this morning as now 5 days late, and still negative, but pink tinge still there when I wipe again!