No strength always tired and sleepy.

I'm 26 year old. Recently married. Suddenly my health has gone down. I feel weak n tired all the time. I may have just had food but in minutes my stomach is empty like I haven't had anything for days. I used to workout so much now all I want to do is sleep all the time. I get drugged sleep I just can't control my eyes from drooping. I just don't feel interested to do anything at all. If my husband forces me to workout I get cranky I don't feel my sexual drive to be normal. I m just so unnecessarily tired all the time. Now it's all stressing me so much that I'm not able to workout and I have gained so much weight. From 69kgs to 75 kg but I look 80+kgs Please suggest me if should take any energy supplements or vitamins or anything at al that can help. Please advise!