I am haviing o positive blood group my husband is also having same o positive blood group. If we have same blood group any problem will arise during my pregnancy. I can have
Healthy cchild after my birth. I want to know the correct answer for my question

There are no problems when you both have the same, or different, blood types. The only problem arises is if you have a negative blood type. Since you are positive there is nothing to worry about.