I loose my weight day by day and feeling tired.

No...Ask me directly for customized diet plan for you. 

It's safe, considering you both are disease-free. Also, you'd probably want to consider your birth control status. If you're using condoms, the penis can shrink and the condom can slip off, exposing you both to disease and you to becoming pregnant if his semen seeps into your vagina. Me and my ma....

Take high fiber low fat diet. Drink lot of water everyday. Take small and frequent meals at regular intervals of 2-3 hrs. Avoid outside food completely. Do crunches and pushups daily to reduce belly fat. Ask me directly for customized diet plan for you.