Irregular period and pregnancy

Sharee
Since I started my period, around 8 years old (I know I was young and was on medication because I bleed for two months due to an iron deficiency). Since then, I've ways had an irregular period. I'll get it maybe every other month, every two months, it's even been so bad that I won't get it for 7 months, but let me tell you, in no way, shape or form is it a blessing to not have it for 7 months. It's brutal. I cried while at work and was almost sent home, I was uncomfortable, I felt like everyone could see the blood, I was wearing super sized pads and using tampons because I bleed so bad. It was HELL!
Anyways, the reason I'm posting is can having such an irregular period cause me to have lower chances of getting pregnant? I'm only 21 and very much single, but I do want a baby and it terrifies me to think there's a possibility I won't be able to carry a baby in my belly and enjoy the ups and downs of pregnancy. 
Has anyone else ever experienced periods this irregular and had a child? Or children?