emotional and just venting

me and my boyfriend rarely argue and if we do it doesnt drag on all day its for a little while and we get over it and go back to being how we were. ever since i got on birth control ive just been so emotional ive always been a crybaby ill admit it but ive just been feeling so sad and wanting to cry because of built up emotions and ill start fights and i feel like im just ruining our relationship idk if i should still be on the pill but i want to be protected from getting pregnant and lets be honest having unprotected sex is way better than condom sex but i feel like this pill is making me have mood swings and im just lost i feel like ive pushed him away and see im about to cry again and im rambling idk if this pill is going to ruin something im happy with or not