Short answer
Yes. Financial pressure and prolonged stress can affect mood, sleep, communication and emotional availability, which can in turn affect marital intimacy.
Islamic Guidance
What Islam teaches
Islam encourages spouses to cooperate in hardship and treat one another with kindness. Financial difficulty should not become an excuse for humiliation or mistreatment.
Practical Guidance
What you can consider
Discuss finances transparently, establish realistic priorities, reduce unnecessary conflict around money and seek professional help where financial or marital problems become difficult to manage.
Sources
Qur'an 4:19; Qur'an 2:286.