Little tmi

So my dumb self decided to have a little me time cause my boyfriend is overseas until November. I'm currently 15w 3d along and I guess I got too rough with myself and now I have I guess old blood coming out. It's brown so I'm not really worried but I wanna facepalm cause I should've been more careful. I have a doppler and found the baby's heartbeat so I know they're ok, but damn I feel like a dummy for being so rough. This is my second kid and I feel like I didn't have this issue with my first with being too rough but I know each pregnancy is different and I'll be more careful from now on