Pre-Seed lubricant

Who has used it or has heard about it? Have been trying to conceive for 3 months. Was late 6 days than started but period only lasted 3 days (normally my period is 5-6) and very light bleeding (more like spotting wouldn't even fill a liner . But tested negative on pregnancy tests. I bought preseed to use this month in my fertile window. Let me know if it has helped you or someone you know conceive ! Thanks so much ❤️