TMI? Losing hope. 😖

Welp, last night I purchased Preseed because I've heard good stories about it helping woman get pregnant. Been TTC for 7 months now. I've got really bad irregular periods I never know when they are coming or going but I started this morning (the app was Right; first time using glow was was 3-5 days ago) I think this free app works better than the $27 almost $30 lube that I bought. Frustrated, really beginning to think I will never get my little prince or princess. So many people around me are getting pregnant on accident. Please tell me how you "accidently" got pregnant. When I scroll through facebook and see all my friends getting pregnant I get so jealous. Why? My heart is broken 💔 i don't know what else to do or what I can do.