TMI :Implantation bleeding and when to test?

Jessica

Ok so it’s been a very long time for us (hubs and I) trying to get pregnant (almost 2 years). My cycles vary quite a bit between 29-35 days. Today is cd 37. Saturday night and Sunday morning I took tests and both were negative. Sunday afternoon I thought I started my period. Sunday I had wiped and saw a little bit of my period start. Very light pink so I put in a tampon. Well Sunday and yesterday all I had on them were thin brown lines never pink or ever full. Today I’ve got nothing. Since I had negatives on Saturday and Sunday I’m wondering if it was implantation bleeding and when I should dare testing again. I need advice 😭