Ttc after miscarriage

Helen • 28 years old ✨ TTC our rainbow baby ~ Mama to 4 angel babies

So I had a miscarriage on 5/5/18 and after I was finished bleeding me and my husband have been having ttc ever since. Thursday I started having pinkish/brown mucus like blood when I wiped with very very faint cramping. I haven’t had any more since. I’m really hoping that it’s implantation bleeding and not me getting a period. How soon should I test do you think?