Shakiness of eyes- please answer!?

Question: I’ve been having this problem with my eyes for the past 2-3 weeks. When I am doing my everyday activities, I find that my eyes shake rapidly side to side, blurring my vision. I cannot control this shakiness and I don’t know when it’s going to happen (meaning it’s random). I’ve had this happen to me about 2-3 times last year but didn’t pay much attention since it was so infrequent. I thought my eyes were just tired or something. But, all of a sudden, this has been happening 2-3 a DAY for the past couple of weeks. I’m worried about this as it hasn’t occurred so frequently before. I do wear glasses. Contacts during the day. I make sure I take my contacts out by 10 hours at the most. Could someone give me an idea of what this could be or atleast who I should talk to? (primary care physician or eye doc?)
Also, I forgot to mention that when th shakiness does happen, it is only for a few seconds. Possibly 3-4 seconds at the most.