Can Irregular Periods Be Affect The Sexual Life?

hi my nam is eman...im 4rm pak....i hav a saver problm dat im almost 27yearz old n sum1 lovez me alot ,he wants 2 marry me...bt i hav a problm ov periods..so iwanna knw sumthing dat if im suffering in it.......dn i can sex with him....ya i face difficulitiez...v dnt need kids bt can i do sex with them