Ever since I started meditating daily last December, a lot of strange things have started happening to me. I started getting a lot of pressure on my third eye, and I still do. Sometimes it gets so strong that it keeps me up at night. I also experience a lot of tingly feelings on my head, and sometimes the tingly feeling is so strong that I react to it by putting my hand on my head, and it goes away. Sometimes I even know what people are going to say before they say it. I also get certain feelings about things, and I'm usually right. For example, there's this guy that I've known for a long time, and I started having constant dreams about us being together (this happened a few years ago). Then we ended up being together, but we didn't last.
I can also see spirits (not often, but occasionally) and nature spirits. One time when I was in a forest at night, I got a very strong feeling that my friends and I were not welcome there, and it made me uneasy. I have also heard voices that were not mine, and one time I even heard a strange muffled voice speaking a language that I did not recognize in my room. My friend said that it could be a demonic language, but I didn't feel anything negative at the time. When I meditate I can also see with my eyes closed, but only when I'm in a deep state of relaxation. What's going on with me? Does anyone know what my abilities could be? A couple of psychics that I spoke to said that I am developing clairvoyance, but I haven't had any visions so far, but I have had dreams of people I know visiting me shortly after their deaths.
What do you think could be happening to me?
I have experienced most of the symptoms you've been getting for a number of years now and it's natural. The pressure on the third eye is usually the chakra activating and can often be a sign of information trying to get through. The tingling sensations around the head/shoulders are likely to be your spirit guide/guides or spirits trying to get in contact with you.
For me, my guide "nudges" me (the tingling sensations) when I'm not paying attention to messages or when he's affirming that I'm doing things correctly. Particularly when I'm in the process of healing or doing other energetic work. Eventually you learn to distinguish between the different sensations.
Try not to get too stressed about it. It's all part of the process and nothing to be feared. You might, however, like to read up on a few protective practices to incorporate into your meditations. They're just visualisations that ensure you aren't disturbed when you're working on a spiritual level.
Feel free to pick my brain about anything that's bothering you. I'm a practicing witch and yoga/meditation teacher so I have some experience in these areas. Enjoy the process!