Low Sex Desire

Hello Doctors,

I need your help. I am 31 year old woman and suffering with low sex libido. I have a five year old girl. Almost six year have been pasted of my marriage. In the starting stage after marriage my sex desire was normal. I enjoyed while intercourse. But after my child (Girl) birth my sex desire suddenly has been decreased. Even no excitement in vagina at clitoris part. But I was normal before my child birth. I thought that it will be normal after some time. Almost six years have been gone, my condition getting worse day by day. Now I don’t have any interest in it.
Few more things I would like to share with all of you.
1: I have highly gastric, constipation and headache problem. Even the Same problem is also with my father also.
2: I become overweight and feel lethargy
3: from last 3 year, I observed that my menses comes in 28th to 30th day but nowadays it is coming only for three to four days. Before my child birth it came five to six days. Secondly, white discharge comes in from my vagina.
4: As per others observation, I become short temper woman.

Even I have consulted homeopathy doctors. She suggested me to take sepia 30 for 2 week. But no any fruitful result come.
I request all you, if any one help in this issue.