4 years with a Mirena IUD and now TTC

I got my IUD taken out first week of April. I have had 3 periods and spot in between ever since! I have never really had a normal period before so I don't know why this time around I am so worried about it. But all I want is for it to be easy. This would be number 3. I "tried" (meaning no BC just let it happen) a year and a half one time and a year the next. I just want my body to normalize and get to baby building lol. Anybody else been on the Mirena? How long did it take? Any advice to speed up the regulating process?