hI jazzy, hope I can help with your query. I have been on both methods, I was on the injection for about three years, which I had to go and keep getting every threee months!! A real pain in the butt ( literally!). It wasnt too bad, apart from the major mood swings at three days post injection, I was really bad for about a day, and then I was fine. Another side effect that I had was bleeding constantly on it for the first three months!! I was convinced by my nurse to persevere and it would stop, and sure enough it did. I would say the injection is for you if you remember to go back every 11 weeks and dont mind needles, it isnt pleasant getting it done, as the solution of depo is rather thick and stings quite a bit. A side effect I also had was slight increased weight gain, but then you could get this from most contraceptives.
From the injection I went straight onto the implant, this is a small rod which is implanted under the dermis of the upper arm and can be kept in for three years. The main reason I got this was because I couldnt be bothered going back and forward for injections, and I was also told that it was more gentle than the injection, and your body bounced back quicker afterwards. Insertion etc was fine, a slight small scar on the arm, adn for the first year everything was great, but in the first year I got the dreaded bleeding constantly again. I figure that this was the remains if the depo injection getting out of my system and my body needed a higher amount of progesterone to stop the bleeding. I had no alternative but to go on the mini pill as well as the implant, and thankfully this sorted the problem.I would say I felt more settled on implant than injection, but that was just me, everyone is different. Since implant removal, I am still not totally back to normal (4 months) and we are TTC, So frustrating! Anything that you put into your body I think has at least some effect. Hope this helps you, sorry it was so long!
Candice xx