So I got the same string like thingy a while ago and I did really much care until my friend told me she had something similar. Mine looked exactly like the one in the picture above. I don't know if I should be worried but I'd love to get some expert answers as soon as possible. I have Googled it and they said that it might be early signs of pregnancy after implantation. My partner and I use the withdrawal method but we are super careful. I know that pre-cum can contain some sperm but I need to know more and what it might be exactly.