Hopeful...

My period is due in 3 days. Last night I started spotting and figured my period was starting. I put my Diva Cup in and this morning when I took it out, there was only a tiny bit of pink blood in the very bottom of the cup. I kept it out until this evening but put it back in after I used the bathroom and had a little pinkish colored blood when I wiped. Normally, I have horrible cramps when I am on my period and I only feel some pressure. Hoping to get my BFP soon but I am not sure how long I should wait to test. Has this happened to anyone else and if so, when did u test and what was the outcome?