Help!

So i am trying to concieve and 2 days ago was my last day being fertile according to this app and this morning i woke up having to pee really bad and when i went to wipe there was little specks of blood of the toilet paper so i went and told my boyfriend somethings not right so i went and wiped again and put on a pani liner and now its like a pink color but its not spotting its very little! Has anyone had this happen to them?