Am I?

Hey guys, on February 24 I got my period but only had it for three days. Which is a little irregular but I just let it go I had unprotected sex numerous times when this app said I was ovulating, the last two days of my ovulation time I spotted a bit it was pinkish red the 9th and the tenth it was brownish. I was pregnant in January and had a miscarriage so my doctor told me to wait awhile I should have but I didn’t my mistake but now I’m tired constantly and take unusual naps. Unusual sleep patterns I took a test and a faint line came up but as of right now I’d probably be about 3weeks and 5 days so I’m confused.