Getting started is difficult for many reasons. Feeling embarrassed about actually moving is a very common one, so if you're concerned about this, you're not alone.
It's sad that the world can make you feel embarrassed about doing something as natural as exercising. Exercising is just moving your body, and our bodies are designed to move. So the first thing to remember, is that you are no different to anyone else in this regard. However self conscious you feel about your body, there is absolutely nothing wrong with it, and it will enjoy movement as much as anyone else's body will.
Doing something new is always intimidating. It's a challenge. And the best way to deal with something being intimidating is to take it slowly, and ease towards your goals gently, with compassion. Be kind to yourself. It's so easy to defeat yourself before you've even started by speaking to yourself negatively, for getting angry with yourself for decisions you have made in the past, but the world is a tough place as it is, and you deserve love. Self love is a good place to start.
The great thing about exercise is that you can do it anywhere. You can go to the gym, the park, or stay at home, and all of these things are effective. The key is to gently experiment with options to see what works for you. Perhaps working out at home is a good starting point, because the thought of the gym is so intimidating that it stops you from doing anything at all. On the other hand, perhaps you won't find the motivation to exercise if you are in your home environment because it will seem so much easier to sit in front of Netflix all evening rather than exercise. You may well benefit from working with a personal trainer who can work with you in the scenario that you find most comfortable, as it will become a timetabled activity which has been designed with your challenges in mind. The key thing is to gently try different methods and see what suits you. There's no rush, take your time, and remember, everyone feels self conscious! You're no different for feeling this way, and just reading this article is a big step in the right direction.
Be kind to yourself. You'll get to where you want to be, and you will unlock that self confidence that you want. It'll just take some self love, patience, and the right guidance.
Now, how about taking a 10 minute walk around the block? Or around the park? Or just walking up and down the stairs a couple of times? See how you go!