As your pain is vague in presentation, your explanation is also vague. After going thro' the history of your pain it is very difficult to arrive a positive conclusion. The + points are - you don't have temp, nausea
. bleeding per vagina. you are non toxic and moving around with pain.
So it is better to do the investigations, instead of wondering what may be the cause (asking here and there) along with clinical examination the following are needed
1) Ultra sonogram of abdomen (USG)
2) Basic blood tests like TC, DC (WBC
, HB, urine and motion analysis
3) If indicated a plain X-Ray abdomen in erect posture
With the above investigations diagnosis and treatment will be very easy.
The way you have expressed your pain, some times no specific illness may be there.