Lying to myself

For the past year its been a roller coaster. I've just been forcing myself to be happy. I've thought about ending the relationship since july the second time you cheated on me, but no i didnt because i didnt want to be alone. The last time i can honestly say i was happy and had a real smile on my face is when i found out i was pregnant. This baby is the only thing that keeps me going and something to look forward to. 13 weeks of knowing theres someone growing inside that i love so much already. the last time i said "i love you" to him and really meant it was on our 1 year, which is almost two months ago. I'm just not happy anymore im miserable. I just cant take it anymore. I can't take all this stress.