Talk to Gynecologist on Gynaecologist

Marrried since 8 months, TTC (taking folic acid 5mg) cycle is irregular with intense pain in 2 to 3 days of periods (pattern of last few cycles: periods came after 28 days for 2 months, Then after 35 days for next 2 months, then after 38 days nd this time again after 28 days) Also tried ovulation kit but of no use. 3 months ago I also had two false positive pregnancy tests with alot of nausea but all others were negative at the same time and periods came. On my last period I felt tingling pain at one point in lower abdomen, continuous pressure on my bladder, gas problem, constipation etc starting from 21st day of my cycle, I was sure that its because of pregnancy but at 38th day I had my periods. This time I had a severe vertigo from 23rd day but again had my periods.. What should I do for conception..plus tell me if any tests are required..