TTC post birth control * sorry long post*

Hi ladies! Congratulations to all of you who’ve just had your BFP’s! I just wanted to ask a question regarding TTC after stopping BC. I have 3 children already, all surprises with my husband but we decided at the end of September to try for one last baby to experience the excitement of planning and trying instead of it being a shock. I completed a pack of BC on Sept 30th but started up the new pack a week later as I wanted to affirm with hubby we had to go ahead. He agreed and was very excited. I had already missed the odd day or 2 here and there during that pack but when I was 1/2 way through my pack of BC in my stupidity just stopped (16th October 17). About a week later (22nd Oct) I started with brown spotting (sorry TMI) which was intermittent but by Thursday (26th) it had developed into full red blood and lasted until around the 1st - 3rd November. During that time apart from when I was bleeding we had unprotected sex a few times. I understand that my cycles would have been messed up but as my first month I guessed and tracked on Glow. It said that I would possibly have ovulated on the 8th November. Hubby and I had sex everyday during my fertile window. Last week on Monday - Thursday I had VERY VERY light spotting which I hoped and prayed would be implantation bleeding but wanted to wait a week to test. So I used first response this morning as I figured period is only 2 days away and they’re supposed to be extra sensitive but still a clear BFN. Do you think I should test again or, seen as this test was supposed to be very accurate just discount this month and wait out AF? Thank you for taking the time to read this post