Idk what’s going on😪

So I spotted alittle bit on 9dpo. It didn’t even last the whole day. Well now I’m 15dpo. 14-15dpo I was having alittle bit of spotting with no cramps at all. It doesn’t even look like a period. I only started spotting after sex. Has anyone else had this? I’m not sure when I should test. My period was due today.