My husband having been trying for a baby for about 13 months now! Before, during and after I was on birth control my periods were exactly every 28 days like clock work! The past 4 months I've only had one period... I had a UTI and was on antibiotics and then I had bronchitis and was on another round of antibiotics these 2 events were about 3 months apart. What could be wrong with my period??!! And what are some helpful hints to conceive????