Help! Ttc concerns

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So I came off birthcontrol early in the year. My first cycle was way long but I did eventually get a positive opk and had a period. Next two cycles were like 45 days ish but got positive opk test for each and following period. Now I had a period 2 weeks ago and another this week. With no positive opks. Help I have no idea what up with me!??!

Also the last two periods have been very light and not as painful