Mirena and acts

I just had Mirena inserted on Oct. 21, only three days ago. The pain wasn't to bad, just very crampy. I had to concentrate on making sure I wasn't holding my breath due to the discomfort. It otherwise went well, quick. Mine was inserted by a nurse practitioner. She wanted me to come in and have it inserted during my time of the month. She said it goes in much more smoothing that way for a couple of reasons, moisture acts as a lubricant, and during our cycles, our cervix dilates slightly. I was at the beginning of my period when I went to have it put it. Just spotting waiting for the gates to break loose. I still am just a little heavier than a spot, my period has yet to come full force, cramping like it wants too though. The past two days, I have had the worst mood swings. Feels very similar to the baby blues. I am hoping this is just my body adjusting to the hormones and it will subside as I had postpartum depression after my daughter was born (4yr). After my son (6mos) I was ok, just baby blues for a couple weeks and I was back to my old self. With my history though, it scares me, I don't want to experience that feeling again. I have been getting very angry over little things the past couple days as well. Almost uncontrollable. I came home and found that our cat had got in our blinds and broke a slat (I guess that is what I can call it) I was so mad, I kicked her and she slid across the kitchen floor. I felt so horrible and guilty after. That is so not like me. I would just ordinarily scold her and forget about it. I am worried that it is going to get worse. Ever since I have had Mirena placed, I have noticed these changes and it seems to be increasing each day. Like I said, I have a 6 mos baby and my husband is deployed. The last thing I would want is a Dr to dismiss my side effects. I already have a stressful life situation right now, if this makes it harder for me and my family, it is going to have to go.