advice please

A bit of a long one... my af was suppose to be due on 1/4 but was a week early (never happens).  
Day 1- spotting on when wipe
Day 2- spotting only when wipe 
Day 3- heavy flow with cramps 
Day 4- medium flow 
Day 5- spotting only when wipe 
Day 6- spotting only when wipe 
My af is normally heavy all way through? 
Iv been having tightness/cramps in lower stomach/ pelvic area since af finished (feels like af is coming)... been ttc since august last year. Food tastes different to me and I felt sicky after a yoghurt I normally like 
Has anyone had anything like this before? What was the outcome? 

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