Bad sexual anxiety problem?

Alright I have been having a really bad time with females that's it's starting to affect me on a more personal level. I had an encounter a long time ago with one girl I realized I actually liked but I messed that up because I was with another chick. That sex was great by the way but the one with the one I liked I couldn't get my thing to work lol. Fast forward I'm with a complete stranger and it was amazing. Fast forward again I start talking to my ex of 6 years and God the sex was amazing as always but it didn't work out again 3 months later I'm talking to my sis in law's cousin and nothing to nervous to get it up. Now I'm with this new girl and she's the best really take home to mom material..... And I even took one of those pills because **** it I wanna go all night, I have a flight tomorrow for an interview and well all day I had a nervous feeling that like I couldn't shake off so I failed miserably.....So what now I know my dick works trust me solo sessions are just fine....I just get in my head the past failures and I keep repeating the same thing in my head..... I need Help?!?!!