Mirena IUD :: Cramping And Pain - Should Removed?

I am 21 years old and I have been on birth control since I was a teen. I started out on the pill because I was experiencing very bad cramping that resulted in me missing many days of school per month. The pill worked fine for about four years but then I started getting bad cramps all over again. I went to my doctor and he prescribed a different birth control pill for me but that pill,and every other pill they put me on after that, made me nauseous and sick. I decided to stop taking birth control all together and just just used condoms but my cramps where just to unbearable and my cycles became long (i'm talking like two weeks, heavy flow). So after about a year of not being on birth control I went to a new obgyn who suggested I try the nuvaring. Well the NuvaRing didn't work either. First I had burning inside my vagina, then I had crazy liquid like discharge and lastly I was nauseous every morning. But, I only had it in for a couple of days, so I don't know if I actually gave it enough time to work properly. Soon after I received a lot of pressure from my mother to get the iud because her worst fear in the world is for me to get pregnant and I just moved far away from home so she worries a lot. I went to my doctor while on my period to get the Mirena put in, he tried to talk me out of it but I refused. He asked did I want to try the shot or the implant but I was reluctant to the shot because of the associated weight gain and I didn't want the implant because my mother had problems with it. Getting the Mirena put in was so painful, I guess since I have never been pregnant but it wasn't what people described. I literally thought I was going to die for about two days. I ended up become really dehydrated and lost my appetite for about a week. I have had the IUD in for a little over a month now but I've have issues. Issue #1, I cramp almost everyday. The cramping isn't as long as regular period cramping but it's equally as painful. It feels like someone is stabbing me in my right side for about 10-15mins. I went to my doctor after the first week to see if it was still in the right place and he determined that it was and I just had bad luck. Issue #2: I have been spotting for about two weeks now. Issue #3, The string poked my spouse for the first time today and I wasn't very happy. I'm very angry and stressed out. I feel like this is totally bull because I am going through the same stuff I was going though before I got the IUD. I was reading online about how the cramps should go away after about six months but what about the strings? I don't want this to ruin my sex life but then again I don't need any unexpected pregnancy right now. Some women have said that cutting the string helps but I am fearful that the IUD will get lost. I am so scared and don't know what to do. I know for sure that I don't want kids right now but I don't want this thing ruining my chances of ever having children. I need some advice, Please Help. I want to know if I should get the IUD taken out and if so, should I try another form of birth control like the shot or the implant? Or should I give the Mirena a couple more months? I've noticed that the stings seems shorter since my period stopped. Could that be caused by my period? I'm thinking that maybe the strings will become longer and my spouse won't feel them anymore. I don't know what to do.