POSITIVE THEN NEGATIVE??? HELP!!

So I have PCOS and sometimes will go months without a period. I'm currently on cd 88. So I've been having symptoms I had with my son (bloated, feeling sick, exhaustion, cramps) so I took a test last night and it appeared to be a faint positive within the time frame. Then I took another this morning with fmu and it was completely negative. Anyone had a negative after a positive?? Pictures of last nights positive.