Could Light pink spotting after intercourse be a early sign of pregnancy?????

Me and my so have been ttc for almost a year well after we had sex I went to the bathroom and when I wiped I noticed a light pink spot on the tissue.... Now I googled it and it said that I could spot during ovulation and I think It was around my fertile time but still If that was the case I have never spotted like that .... Could it be implantation bleeding or what ?? Please share your thoughts!! Thanks in advance