Losing one tube to the ectopic doesn't close the door on another pregnancy. Your remaining tube can still work, and fertility treatment already got you
pregnant once before. The laparoscopy your doctor has suggested, along with hysteroscopy, chromopertubation and an endometrial biopsy, is the standard way to check whether that tube is open and the uterine cavity is healthy before trying again.
Next Steps
Go ahead with the surgery as planned. Whether the remaining tube is open will decide if trying naturally or with IUI makes sense, or if IVF is the better route this time.
Health Tips
Given your PCOS and earlier irregular cycles, keep following up on your
thyroid and ovulation treatment alongside this. Please discuss this with your fertility specialist once the surgery results are in, since timing your next attempt depends on what it shows.