Hello and welcome to healthcaremagic, The chances of getting a pregnancy after tubal surgery is rare especially if they have also been burnt. But sometimes they reunite and pregnancy occurs. Such a pregnancy is more likely to be tubal pregnancy [means that the baby lies in the tube rather than the uterus]. Irregular periods are more likely associated with causes like fibroids, polyps, adenomyosis and hormonal disturbances. The protocol however is always to rule out pregnancy first. So get a urine test done with first morning urine sample. If it is negative and symptoms persist, have a gynec evaluation to determine any other cause. Hope this satisfies your query. Thanks for using HCM. Feel free to ask any more questions that you may have. Dr Madhuri Bagde Consultant Obstetrician and Gynecologist