preventing pregnancy

So I'm ebf, I've read that breastfeeding is helpful in preventing pregnancy for the first 6 months (not sure whether that's true or not so please don't come for me on that!). I don't want to be on any birth control, I'm very forgetful with the pill, I don't want anything inserted in me & the shot was AWFUL. My SO doesn't like condoms so we're using pull out & we rarely have sex as is because I'm just not interested right now. We've only had sex 3x & baby is 14 weeks old. I haven't had a period, wasn't sure if the period app would be able to help me track ovulation since I don't have a period or if I should buy ovulation strips & try to track that way?