TTC after miscarriage

Just looking for some advice... I sadly miscarried back in march this year at 11 weeks. My 1st period was then exactly 28 days, 2nd was 33 days, 3rd was 24 days and now I'm on 36 days and still waiting for AF to show. I've taken a pregnancy test (just a cheap test strip from online) but it's negative :-( I've had all the cramps down there for a period the last few days. This morning when I wiped I had a smudge of light pink mixed with clear cm so just assumed AF is finally here, but then nothing all day and I've just wiped again tonight and again the tiniest bit of light pink mixed with clear cm.

I'm just really confused as to what's happening. I would love to be pregnant but keep getting negatives but then if I'm not I want AF to show so I can try again. Any idea's?