I am married for a year and half now since day one...

As long as your husband does not suffer from any health problem that prevents him from doing sex with you, there is no problem in facing him, as he will not feel embarrassed.
But you must be calm, choose the right time, and ask why this behavior. Is there a problem in accepting the relationship with you because it is not normal for all that time to remain without sex other than that he does not initiate it either?
He must clarify his problem because if there is any problem between you, you shall work together to solve it and not leave you in confusion

As long as he is organically healthy and loves you already, the last reason is sexual frigidity with him, because he does not feel the excitement or sexual desire and his feelings do not move unless he pushes it for this and this matter has nothing to do with you or his love for you but rather it is considered a medical problem for sure, there are reasons for childhood, for example, and the reasons must be known in order for treatment to take place therefore, a psychiatrist must be visited in order to reach the cause of this frigidity and there are types of treatment that address this condition and can refer to a doctor to prescribe him stimulant therapies for sexual desire, but psychological treatment must be done so that it does not depend on drug therapy and whoever else does not feel the desire at all