I am a PC user and don't have photoshop or anything similar (unless you count microsoft paint, which i don't think really works well).

All i want to do is take bump photos with my semi-nice camera, load them on a computer and add the number of weeks onto the photo in a cute font that I can pick myself (probably by downloading it from a free font website).

I'm not sophisticated enough to do much with lighting, etc... just crop and add a number/text.

Any recommendations? Is there a free photoshop type thing I can download?