Hey,

I think you can pursue another degree from IGNOU if you really want to even after completing your graduation given you meet their eligibility criteria. According to the official site the University admits students to its Bachelors Degree Programme from both formal and non-formal scheme. The non-formal stream consists of those students who have not cleared 10+2 or equivalent exam. To take admission to IGNOU’s degree programme they have to pass its Bachelor’s Preparatory Programme (BPP) first.

Hope this helps.