How Can Infertility Due To Irregular Periods Be Treated?

Hey my name is Libby and I am 25 years of age me and my other half is planning on having a child but I have irregular periods so so many people telling me that it will be hard for me to get pregnant because i have irregular periods.... So i ask around to c what will help out many ppl said geritol... So purchase some before taken i look them up but on the net it said geritol do not work... But why would ppl say different.... Any who.... I started taken them 24 straight days... Last month decided to keep track cause im really trying i have a period from 15 to 19 nov my period tracker said i was fertile from 24 to 29 nov but ovulate on the 29 nov... Now dec 1 i spotted dec 2 spotting more.... 11 days from period back on.... 5 days ago i was having very bad pain on n off for 2 days pain around my belly to my back so bad to the point felt like i could not breath r walk.... But now i dont have it.... Help me can i have my wish