I'm 21 is it weird that at this age I'm still not sure what career path I want to follow?

It is common, but is a lack of direction. Nothing prevents you from changing jobs within a company or between companies to a related one and the added skills actually advance you. But each job requires a skill set and training and learning curve. A successful person will start a path towards a goal.
In the USA is the Bureau of Labor statistics outlining general descriptions and requirements:
http://www.bls.gov/ooh/a-z-index.htm
The salaries and exact growth in number of jobs vary, but it is a place to start.
I started with a Chemical Engineering degree, and started at IBM as a Quality Assurance engineer of chemical processes of circuit boards, went to night school for an MBA, accepted a job evaluating technical suggestions in many areas of production, worked with capital planning and justification, moved into circuit board procurement engineering, added commodities of connectors, cables and labels, changed to electronic component engineering learning on the job about electronic components, moved to a job in Thinkpads linking procurement, development, and manufacturing to reduce the cycle time from design to production and was a pioneer in linking groups together as my role was copied to other people and departments, and so on into being named an essential technical person at the start of Lenovo critical to success of the company. One job can lead to another. Training and experience builds. I described all this to show that you should aim for a goal and steer a course in life if seeking success. Yes, lack of direction is common, but that doesn't make it beneficial or a good path.

The secret of getting ahead is getting started. - Mark Twain No. I think it is commonplace. You may also vary your intentions over time. No. Around 3rd year you should get a general sense of what you want to do but college, unfortunately for most of us, isn't the end. Honestly keep thinking about, choose a major and graduate. You can do something else entirely if you wanted to for grad school. No but it isn't good if you arent doing anything about it It is a stage of the dilemma for many youngsters so don't consider yourself as odd man out. Try to find out what interests you more. Look for some part opportunities in the same domain. When you will work you will get to know your area of interest and kind of work that appeals you.

No. I think it is commonplace. You may also vary your intentions over time.

No. Around 3rd year you should get a general sense of what you want to do but college, unfortunately for most of us, isn't the end. Honestly keep thinking about, choose a major and graduate. You can do something else entirely if you wanted to for grad school.

No but it isn't good if you arent doing anything about it

It is a stage of the dilemma for many youngsters so don't consider yourself as odd man out. Try to find out what interests you more. Look for some part opportunities in the same domain. When you will work you will get to know your area of interest and kind of work that appeals you.