Emma I had implant bleeding on the Thursday morning one wipe of pink then nothing. This was 11 days after we last dtd. I got the faintest bfp on the Friday night, Sunday I got positive digital and then Monday I got positive bt hcg of 35. Which was 15 days after we last dtd. As it was a natural cycle I didn't really know when I ovulated but assume it was a day or 2 after dtd.
Good luck sweetie hcg has to starting building somewhere before it gets higher!!