Sister may Allah bless you with patience, remember the story of younas AS? He was given all and was taken away everything from and when his wife complained he compared the duration of the blessings vs duration of test and it was minor hence he remained patience. Sister Allah is testing you, I can tell because my own sister is going through the same and I tell her exactly what I am telling you, even worse she did not have very good life even before marriage. So when you think you have problem and you are being patient and you can't take more remember there are people who are suffering even more and they are more patient. Allah wants to raise your rank may be, that's why he is testing you so please be patient,
"For indeed, with hardship [will be] ease. Indeed, with hardship [will be] ease." - Qur'an 94:5-6
"And if Allah should touch you with adversity, there is no remover of it except Him. And if He touches you with good - then He is over all things competent." - Qur'an 6:17
"[He] who created death and life to test you [as to] which of you is best in deed - and He is the Exalted in Might, the Forgiving]" - Qur'an 67:2
"O you who have believed, seek help through patience and prayer. Indeed, Allah is with the patient." - Qur'an 2:153
"...And Allah loves the steadfast" - Qur'an 3:146
So have faith in Allah and He is all knowing all merciful. He will test you, just have faith in Allah and insh'Allah wait for the good.
A sincere advice: keep doing dua' in your qayam um lail (tahajjud) its time when Allah never reject your prayer provided you are sincere. Also make sure you eat hallaal and not haraam, don't worry about your sins just ask for Allah's forgiveness, indeed he is most forgiving most merciful.
Remember Allah does not test you more than you are capable of bearing
"Allah does not charge a soul except [with that within] its capacity...." - Qur'an 2:286
One more thing, you may think it's good for you to goto your husband now but Allah has got better plans He knows what you don't, so just pray/supplicate as much as possible
Also please be aware, never be hopeless from Allah, there is one that is hopeless of Him the most merciful, it's is Shaytaan (la'natullah) and this iblees forgot the point that Allah is most merciful and lost all the hopes, instead he turned to be an enemy of Allah (SWT) and he will never be succeeded. So Please do not be hopeless and save your imaan, for there is one thing that we the muslims have faith in and we have biggest hope, it is the day of judgement, if your in-laws are not good to you (same story for my own sister) be good to them to your best, keep praying to Allah and hope that on day of judgement you will be standing one-to-one with Allah and He is most just.
"... And Allah Knows, while you know not." - Qur'an 2:216