Weird periods

Hey so I started my period when I was 12 and now I'm almost 16 but for some reason I've always had a problem with them being irregular. My last period was 86 days ago and in the year of 2020 I only had 4 periods. I'm really scared to go see a doctor because I don't want some one looking up my who ha loll. I just feel like thatd be very uncomfortable. Do u have any suggestions or ideas about anything? If so please comment something. :)