Post Mirena removal question. PLEASE READ.

I got my Mirena inserted the week before this past Christmas and got it removed May 25, 2018 because of my sensitivity to the progesterine. I had some spotting the same day as removal and the day after. I have not had a period, yet. And I have been sexually active with one guy (im a 22 year old and single, still in college) and sometimes we use condoms, sometimes we just do the pull-out method. (I realize it’s not a smart move, please dont lecture me.. i realize my responsibility in this!!!!) So, it’s been over a month without a period, been having some weird cramps, lower back pain, tired (but I am currently taking an 8am class, so that could be a huge reason for my lack of energy) and headaches. My cramps are usually just on one side.. mostly left side. My boobs are not sore and they dont seem swollen to me.

I guess my question is... how long did it take to get your first period? Or am I missing mine because I could be pregnant? I do plan on taking a test, but I cant till next weekend.

Please dont lecture me. I know my responsibility in this situation. I just want to know if me being over a month late is normal after post removal or if i should be concerned about being pregnant.. i have read that it takes some women a while to get their first period.. i’d just like to hear from yall.. thanks💕