12 weeks pregnant & don't even want to think about !!! Hlp!?

I'm 12 weeks pregnant and I just feel uncomfortble all the time on top of tht I have a yeast infection(tmi) I know . But I just started living with my boyfriend of 4 years and he has actually threatened to cheat on me if we don't have more . Yes I know it's crazy . But he has nvr cheated on me b4 were middle school sweet heats but how can I let hi understand how I'm feeling ually and emotionally during this pregnancy. Alot of times I suck it up and try to make him happy but I just get so tired and my drive just isn't there right now . It really makes me sad b/c I love him so much and don't want to lose him biut right now se is very pain full and I d don't know what to do w/ out feeling nauseous and w/ out getting into an argument . Pls help any suggestions? Serious answers olny ...thanks