implantation bleeding? ovulation? miscarried??

I'm new to the cycle planning stuff.. the app said this is my ovulation week. my period was over last Tuesday (3/13), had sex w hubbie last Sat. Now I'm worried because I am spotting for the last 3 days a dark brownish red sticky stuff... n yesterday there was a glob in the toilet but it looked shriveled up. is this ovulation bleeding?? Or implantation bleeding?? Or a miscarriage?? idk!! 😰