Strange bruise with 'incision' through it?

I woke up several days ago with a yellowish bruise on my calf. Upon closer inspection, it has a darker line going through it that appears to be some kind of cut or incision. A bump is also present underneath the line. This bruise came out of nowhere; it was not apparent the previous day. I also find it strange that it is yellow; bruises usually appear as a darker color and then fade to yellow as they heal.

Anyone have any thoughts on what could have caused this? Is it possible that I hit my leg on something a week or so ago and the bruise took a few days to appear? Have I been abducted by aliens/government officials who implanted a chip in my leg?

Picture?

My guess is you were but by something. Ive had a couple of spider bited that showed the actual fang incisions, and stayed bruised and swollen for a week.

I'd be willing to bet you slept on your stomache, and something thought a nice meaty calf looked like a good meal.

Hi OP

Could you please provide a picture of the bruises of we can see?

Also, just because you have a bruise you cant explain does not meanits something sinister. You may have bumped yourself somewhere or been bitten by something. Dont jump to conclusions

By the pictures you have provided, it does appear you have been abducted by alien government agents who planted a RFID in your leg.

Spider bite. It's the season. I got biten 2 weeks ago, bad symptoms including bruising and puff.