Moment of passion symptoms and conditions

Hi - just to say firstly, I have my mirena in for almost a year and a half and am hoping to have it out next week, before I kill someone!! So I am in no way 'pro' mirena.
just wanted to comment on your hair loss posts- after my first daughter, this happened to me too, without mirena. I actually had bald patches and was super paranoid. My hairdresser told me that this is very common in the few months after giving birth - the hormones are trying to rebalace and this unfortunately is a side effect. My doctor confirmed that it was not alopaecia as I was self-diagnosing. I used to cry in the shower seeing all my hair in the drain - but now, 3 years, another daughter and mirena later, my hair is beautifully healthy again.
But on the other mirena symptoms I have. My poor husband has not had any affection in the bedroom for almost 2 months now, which is scary as we enjoyed a healthy 4-5 times a week sex life until a few months ago. My first year with Mirena was fantastic, I recommended it to friends, but the past 3-4 months have been hell. Who is this psychotic person that has taken over me???? My husband is almost afraid to talk to me some days, because I go from sweet and cheerful to a screaming, raving lunatic in seconds, without warning. The weight gain has been huge - about 45lbs in 16 months and then the days where I don't feel depressed, I look in the mirror and it makes me depressed with the huge gut I now have. I've always been a curvy lady, but I never had a big stomach and it seems that all of this 45lbs is just sitting around my tummy.
Now I have to decided to have it out, and I'm left with the dilemma of birth control. My 2 daughters are 18 months apart, the oldest just turned 3, so I don't want another baby just now. However I would like another one in the future. Pills don't work for me - I took them religiously and got pregnant with both my daughters whilst on the pill. Do I choose condoms? Would I actually stop a spontaneous moment of passion to go to the drawer to get one, lol? I'm kinda not really sure what to do. All I know is that I need to get this out next week, and pray that I find another form of birth control. But in saying that, another baby in the house couldn't be as bad as what this thing is doing to my mental health.
I'll post again after I have this out