I am a 22 years old lady am on depo shot nd npow its been 3 years and i want to stop using it and take the pill but now since i was also taking a -len doxycyc i feel wierd on my womb and i feel nauseus,tired,moody,emotional, back pain ,head aches,tummy cramps ,i eat a lot sometimes i eat less ,i suffer from stress ,i feel bubbles in my womb . What can it be ?