implantation bleeding or period?

having been seeing this from last night,

I have sex during my ovulation time,and have been having pregnancy symptoms since dpo 6days and still is having it,haven't taken no test yet. my lower abdomen feel heavy bad and my breasts are getting heavy bad,swollen ankles,mild cramp and lower back pain,terrible headache at times on and off,emotional bad too,am pregnant? am scared of taking a test and see negative, I had a miscarriage this year but this blood is much different and symptoms too