I'm so confused... implantation bleeding or awaintg AF??

We're currently trying for baby number 2. With my first pregnancy i had implantation bleeding then after a positive test on my period day I had heavy bleeding for 3 days, but retested and all was fine.

Friday which was day 10 after ovulation a had a tiny bit of blood which I though could possibly be implantation bleeding. Anyway fast forward to yesterday when AF was due I did have cramp the night before then yesterday first wee I did a first response pregnancy test which was positive, then 3 hours later I had pink fresh blood when I wiped, but that was it. I then had light brown spotting throughout the day followed by a negative test.

I held my pee in for 5 hours last night and had a negative digital clear blue this morning. But AF hasn't arrived yet. Again I wiped this morning and I had some sticky brown spotting/discharge. I don't know what to think!

I haven't told my husband yet as he gets so excited and doesn't hear me out before he gets on cloud 9, so I don't want to get his hopes up!