I had sex with my boyfriend throughout the entire month, including my fertile window. We use a condom and pull out. Last night we had sex and he fingered me, once I got home I noticed a light amount of blood in my underwear. I'm a little sore and I remember him feeling like he scratched me so I didn't worry about it too much. Today brown discharge is coming out and I started to ge concerned . My boobs having been hurting for two days now, which is normal for me within 5 days of my period, but I'm in the right time frame for implantation bleeding. My period is about one week away from today. Worried that this might be early stages of pregnancy or just worrying too much. Any input appreciated!