These aren't skin tags. My guess (and it's at best only an educated guess) is that these are molluscum contagiosum warts. The name is a misnomer--they aren't contagious. Cause unknown, prognosis--spontaneous disappearance in 6-9 months, on average. They can, however, be easily treated (freezing, acids, etc.)
I advise you to show a doctor for diagnosis, assurance, and quite possible, treatment.
I hope you have gone to see a dermatologist. I have somehow contracted molluscum. I had NEVER heard of it, and think there should be literature available in dr's offices about it. They continue to spread. I have had them frozen off, but they only spread to other areas (and I believe this was from shaving that they spread). This has made me change all kinds of plans because I was suppose to travel sharing rooms and bathrooms with others, and there is no way I am going to risk giving this to other people. I'm sorry, but I think it is contagious. I know I had to get it from someone. I work with children that have all kinds of skin problems, and have only had one sexual encounter this year(and from reading info it can now considered a STD, yet I have never heard it mentioned, and since it can be, it should be made aware of), and hope it wasn't from that. I also used to get facials and full body massages almost weekly. I think they started on my face, but I was unaware of what it was. It just seems to be getting worse instead of better. I know it may take months and from what I have read online, possibly years to get rid of it. What I want to know, and what no one seems to be able to answer me, is will I ever be safe from giving it to someone? It has been 2 months. I am calling my dr tomorrow to tell her I am not getting better. My one dr tells me it can only happen from skin-to-skin contact. Yet, I read it can live on objects too. I am totally confused with all the info I have read. I am angry and depressed. How are you? What are your feelings?