irregular and ttc

Kimberly
I've never had a regular period. Sometimes I get them every month, then I will go 4-5 months without a period. Hubby and I have just decided we want to ttc. My mom told me she didn't get a regular period until after she had her first kid at 28. I'm currently 25. Do any ladies have advice or something they've added in to regulate their periods? Someone told me that if you have sex more regularly then your chances of having a regular period increase. Any advice? Thanks ladies!!